Asmodai
"REPENT, MOTHERFUCKER!!!!!"
- – Asmodai, If The Emperor Had A TTS Device (Episode 20)
Asmodai is the Master of Repentance of the Dark Angels. He is the oldest and most experienced of the Interrogator-Chaplains, and also the most obsessed with hunting down the Fallen Angels and making them repent. SHOWING HIS INTENSE BURNING LOYALTY TO THE GOD EMPEROR. He's also known for failing at least twice for every success, and causing so many problems for the Dark Angels you have to wonder why he hasn't met his end in glorious battle yet.
He is NOT the Grand Master of Chapter's Chaplains however; that position belongs to Sapphon, though he's not as famous as Asmodai. NOR is Asmodai the greatest of his craft, that honour belongs to Molochia who made ten heretics repent instead of Asmodai's paltry two. So Asmodai is pretty much only known for being one of the angriest fuckers within his Chapter, his rage fuelled by his self loathing at only being almost the best at everything.
Biography
"Better that 50 million innocents perish than one single Traitor escape retribution!"
- – The man himself. In an official GW publication.
Starting as a no-name tactical marine in the eighth company (that's what the book says, but the 8th company are Assault marines) Asmodai was a fairly unremarkable soldier. It was only when he was the lone-survivor of his first encounter with one of the Fallen Angels when his career actually took off: as there was no-one else to explain the situation to, Asmodai was taught the secrets of the chapter and was offered a position in the Ravenwing or the Deathwing. He chose neither and declared he would be a Chaplain instead as his obsession with finding the Fallen and exacting revenge started taking root.
He captured his first Fallen in 411.M41, but failed to make him repent when the Fallen died without confessing, which meant right off the bat he sucked at his job. This obviously caused Asmodai to enter deeper levels of RAGE and then started going to unhealthy lengths to capture more to slake his angry streak. With renewed vigour, Asmodai caught three more Fallen over the next 25 years, but still managed to kill each of them before they could repent. Normal people would have taken this as a sign that their chosen profession was not for them, but Asmodai was no normal man. So the Inner Circle decided to give him one they'd caught earlier before Asmodai exploded with pent-up frustrations. Asmodai broke this one in one single eighteen day session of physical and mental torture. When Asmodai emerged from that cell smoking a cigarette, he had earned his first black pearl and he smiled for the first time.
Rather than allow him to calm the fuck down, his first success only made his obsession grow and it bled into the other aspects of his life as a Space Marine so bad, he's basically become the "fun police" of the 41st millennium. The Dark Angels only realized how hard shit had hit the fan when Asmodai bombarded an Imperial city to flush out a single Fallen. Azrael, who saw his PR rating plummet down, politely inquired whether this wasn't a bit much. See the quote above for Asmodai's answer.
Now, this was just too crazy, even for Dark Angels, so Azrael had his command privileges revoked and transferred him to the 10th company so he could learn humility and a bit of temperance. However, not six months later the Master of Recruits came to Azrael sobbing and begging to get that absolute madman away from him: when a bunch of recruits didn't answer his questions as enthusiastically as he liked, Asmodai ordered them all killed because he thought their gene-seed might be contaminated by "tardiness". And it didn't stop there. When he heard someone from the Seventh Company laughing while inside the Rock, he had the entire Company sworn to silence except for hymns and communicating in battle for one standard year. He doesn't actually have the authority to do any of those things, though, at least not without Azrael's approval (which he won't get). But he just tends to threaten the officer in charge when he doesn't get his way, and the cowardly fucks are so scared shitless of the crazed loony that they actually obey! (Besides, a vow of silence covers speech. Laughing is not speaking.)
Unfortunately this zeal to track down Fallen has led his chapter into some big troubles, like where he countermanded a Captain's orders and diverted a Dark Angels strike force from their position fighting Orks to investigate rumours of a "remarkable warrior". It turned out that warrior was in fact an Inquisitor of the Ordos Xenos, and that the Dark Angels unauthorised repositioning had cost the allied Silver Skulls most of their army. Not only that, but the Inquisitor returned to the Silver Skulls homeworld to explain exactly what happened and demand assistance in punishing the Dark Angels for their behaviour. Wisely (and partly for fear of going head-to-head with the Unforgiven) the Silver Skulls Chapter Master instead requested that Azrael come and explain himself personally. So Azrael had to set aside his duties for a time to go and apologise for what happened. During that time Asmodai was grounded under lock and key until the Supreme Grand Master got home to decide what to do with him. When Azrael returned to the Rock and asked if Asmodai was sorry yet, Asmodai responded that he was sorry he didn't kill the Inquisitor when he had the chance.
At some point, Asmodai was passed up for promotion to High Chaplain, despite his seniority in age and the respect/fear he has earned within his Chapter. The position instead went to the much younger and more conservative Sapphon (who is secretly not conservative at all and is tasked with the curse of being the Chapter's most radical, unorthodox member). Asmodai openly states this was a bad idea, since he sees Sapphon as weak and indulgent. In comparison, Sapphon (and most of the other Inner Circle Masters, and probably just about everyone else) sees Asmodai as psychologically unstable and a destabilizing influence on others.
Azrael has had to rein him in or cover up for some of his more excessive actions, but despite everything he keeps Asmodai around because, say what you will about his sense of humour (or lack of it), the writers like him. If there's a Fallen Angel (or even someone who might know something about a Fallen Angel) out there, he will probably track it down, and then probably kill him instead of making him repent. Give him a job (preferably the killing of some heretics) and he'll get it done, usually with too much collateral damage because he's too lazy to do things properly, and then Azrael will have to cover up for whatever major fuckups ensue.
It is interesting that despite his long service and obsession he has only able to make TWO Fallen repent and apparently killed many more by accident, implying that he's really just a sadist asshole. (On the other hand: there's that, but it is also quite hard to make a Fallen truly repent to start with. Even those that reject Chaos are often embittered fucks who hate everything the Dark Angels stand for. Remember, even the best of the best Interrogator-Chaplain stands at ten successes to Emperor-knows-how-many failures after a lengthy and fruitful service). This still doesn't excuse his paltry two successes seeing as how he's literally their oldest chaplain, and the fact that he's twice as likely to kill Fallen by accident than to make them repent. His preferred tool of interrogation is a torture weapon called "the Blades of Reason".
Quite ironically, Asmodai is named after a daemon king of lust in Christian mythology, so while WH40K Asmodai is busy fun-policing the galaxy, daemon Asmodai is conversely busy living it up Slaaneshi-style. Interestingly the name itself comes from Avestan "Aeshma Daeva" meaning "wrath demon", which is quite an accurate description for this raging retard.
Asmodai is the chapter's rabid attack dog, but his zeal and commitment can be infectious to those that follow him into battle and the inner circle are very wary that he may end up pushing the lower ranks in a less-than-desirable direction which is why the level-headed Sapphon was given the top job instead; they realize that if Asmodai was ever to gain a position of higher rank then it could only mean trouble for the chapter. HOWEVER, what this really means is that Asmodai is a case of That Guy to the extreme: bad at his job, takes his rage out on the accused (not even convicted) marines, attacks others who ARE doing their jobs well out of his inferiority complex, willingly loses battles and men that take decades to replace because of his obsession with the job he's bad at and then sucks up as hard as he can to make sure that nobody higher up sees fit to replace this walking sack of dereliction of duty. If Robot G-man is anything like his "meritocracy first" speeches proclaim, his first action will be to march right up to this company and punt Asmodai right to the nearest chaos stronghold, if only so he can do Abaddon a favor and make him look like Creed by comparison.
The Inner Circle are very much aware that Asmodai is a mad man straining at the leash but his zealous hatred is usually pointed towards the enemies of the Imperium (whenever it doesn't have to go through the Imperium itself), so they simply need to point in the general direction of the enemy and shout "Asmodai I can see one over there!" and then smile in satisfaction as the enemy promptly empty their collective bowels as Asmodai turns his violent attention their way.
Asmodai himself is very much aware that he is mad, during “The legacy of Caliban trilogy” a city-sized Daemon tried to get inside his head and attempted to corrupt him. Asmodai’s inner thoughts can be summed up as “Am I Mad?... WHO FUCKING CARES, TIME TO KILL ME SOME TRAITORS!” and using the power of rage he banishes the Daemon from his mind and then charges into an army of poor lesser Daemons and butchers everything that he can get his hands on.
Tabletop
DID SOMEONE JUST SAY MURDER ANYONE VIOLENTLY?
Asmodai made a semi-welcome return to the tabletops in the 6th Edition codex with new rules and a new model. Sadly the DA's 7th Edition codex didn't make him any more useful, or viable. His page is actually right across from the generic Interrogator Chaplain, making it very easy to see how useless he is in comparison.
He is a WS6 interrogator chaplain with no upgrades, except for his trademark "Blades of Reason", which is a no-frills close combat weapon with the Instant Death rule (kind of makes you wonder why he keeps failing at torture)... he also scores +D3 victory points if he slays the enemy warlord in a challenge. Despite his WS boost and instant death capability, he will likely find this difficult (to say the least) to achieve.
Being an Interrogator Chaplain he causes Fear which doesn't help him so much, since his WS is high enough that he hits most of those things susceptible to Fear on 3+ anyway and dropping those things from 4+ odds to 5+ odds when they hit back is not something to be jumping for joy over. Neither is an instant death weapon that has no bonuses to-wound nor any AP value; if you get REALLY lucky you might insta-gib a monstrous creature by rolling a 6 to-wound and it failing its save, but you're still probably better with the more reliable Crozius against those anyway, while you were always insta-gibbing humans/tau/eldar with anyway...
Unfortunately, like the Dark Angels themselves, you are much better served taking a tooled up nameless Interrogator Chaplain in your force and ditching Asmodai, which is rather fitting considering his fluff. Taking someone good at their job is often better than taking someone who is zealously terrible at it.
8th edition
He got leaked early, and first impressions are... looking a little better, but not enough to fix the fundamental problem with him: you're still better off taking a normal Interrogator-Chaplain. His Blades of Reason are still S-user AP-nil, but under the new Damage characteristics they deal D6 damage compared to his Crozius's damage of 2, and with most models in the game having more wounds this isn't a risk worth taking. He's still an Interrogator Chaplain statwise (that is, under their new statblock, so he has 5 wounds and an impressive WS 2+) so he also has "all Dark Angels within 6 inches re-roll failed to-hit in melee" and "all enemies within 6 inches have -1 Ld", plus his own personal ""all Dark Angels within 6 inches have +1 attack". The problem is, he's expensive, 145 points (or Power Rating 8) to a normal Interrogator's 90 (Power Rating 7) and doesn't have the option to buy a power fist.
2nd Opinion: Take him, a Deathwing Ancient with TH+SS, and as many deathwing knights as you can fit. There's nothing in the rules or indexes stating +1A buffs do not stack, so Asmodai and the ancient (while powerful choices in their own right) turn deathwing knights into something that would make Slaanesh blush. Hitting 4 times (sergeant 5 times) on 3's, rerolling failed hits, S8, -2 AP (-3 for Sergeant) 3 damage each (2 for Sergeant but the wounds carry to different models). Charge these avatars of death into TEQ and watch your opponent cry.