Ikit Claw
Ikit Claw is the Master Warlock Engineer of Clan Skryre, making him a Skaven special character in Warhammer Fantasy.
The chaos dwarf-thingy of the Skaven
Similar to other immortal Skaven like Lord Skrolk (Clan Pestilens) and Throt the Unclean (Clan Moulder), he achieved immortality during his years of obsession with magic runes and artifacts of other species. He is one of the oldest skaven still alive and was present when the great Skaven civil war happened.
He is a white fur Skaven and like every other white fur Skaven, they are good with magic which he has put his good talent to use by spending his entire life studying magical lore and mastering the dark magitek of his Clan. Just like a certain whiny vampire, he journeyed around the world in search of any magic related item to study even if it meant risking his life or disobeying other Skaven clans (He once pissed off Clan Pestilence by trespassing their territory into Lustria). Other than his obsession with magic, he is one of Skryre's most skilled and prolific inventors and he invented the DOOMWHEELS we and the Skaven loves (but hated by other man-thing and dwarf-thing because they don't like to be zzap and ram by the damn thing), and it certainly proved that he is the most powerful and smartest (for a Skaven) warlock of all. His most notable physical characteristics are the face-covering metallic mask and artificial arm-brace he invented for himself centuries ago, to cover his scars from a failed experiment that badly burned his face and his left arm.
Just like every other Skaven, he is egotistic and ignorant. His greatest goal is to create a weapon that would surpass Metal Gear uhm, I mean he wanted to create a weapon so dangerous that he would made himself a name more famous than his master Morskittar, the current ruler of Clan Skryre. He doesn't gives a shit about other Skaven or the under empire or the destruction of the entire world, he just want to be famous even if means to destroys the entire world. What a dick.
The Doom-Sphere
Ikit Claw's dream obsession with creating weapons of mass destruction has led him to create a doomsday weapon akin to the real life atom bomb: the Doom-Sphere. He first kick started the plan after he took many Kraka Drak's engineer as slave. Of course, the stubborn and vengeful nature of the dwarfs has led a Dwarven Master Engineer Klarak Bronzehammer to stop him. Due to the typical Skaven incompetence however, Ikit Claw suffer humiliated defeat similar to Thanquol in a typical Gotrek & Felix chapter, but that doesn't stop him. He came back once again to improve the sphere with metal-alloy he stoled from his rival Bronzehammer, only to suffer the same defeat as last time by Klarak Bronzehammer. Yet, Ikit Claw survived and so long he lives, he will never stop creating doomsday devices to threaten the very fate of the world just for his own ego.
The End Times
It is said Ikit claw, Throt the Unclean as well a both of their respective clan: Skryre and Moulder worked together on creating the ultimate Skaven killing mahcine that turned out to be "Stormfiend". Although both publicly announced that only the chosen clan gets to use these badass new toys, they still put them up on sale out of profit in the Skaven black market where everyone gets to buy one, especially the cunning grey seer of clan Fester Rasknitt who had his very own deathrattler Stormfiend.
Ikit Claw was first seen in the Skaven siege of Karak Kadrin where he contaminate the dwarf hold full of poison wind. Later, he went to help the siege of Kharaz-a-Kharak where he was seen killed but actually wounded. After the Skaven allied with chaos, Ikit Claw went to stop Nagash's ascension with the Nurgle possessed Isabella von Carstein and her Nurgle army. Without his rival Bronzebeard around, Ikit Claw was able to safely blown up Nagash's Black Pyramid (which cannot be put to scratch by the Tomb Kings) with Isabella distracting the bone daddy himself. After some what later, Nagash sent Apophas to kill Ikit Claw for his asinine bomb prank which led him to Skavenbright where he killed a bunch of rat shit. It is said Klawmunkast and his Rat Tank was there to hold the Apoppas in place before Ikit Claw sent him to the chaos realm with his warp stone bomb. So yeah, Ikit Claw actually get a lot of shit done in the end times and he has proven himself to be the one and only creature in the world to blow up Nagash's indestructible (not anymore, lol) Black Pyramid as well as Apophas, the seemly undying spooky scarab guy.
Also, he probably helped Clan Skryre in blown up Morrslieb, almost making his dream come true if even wasn't those pesky magical amphibian living in the jungle.