D&D Monster Maker

Stats

Type (d14)
1	Aberration: totally alien mindset, like Slaadi and Beholders
2	Beast: a simple animal
3	Celestial: higher entities from higher planes, like Angels
4	Constructs: made, not born, like animated items
5	Dragon: though they can true dragons, they're probably a distant relative
6	Elementals: born of the elemental plane, gifted with elemental powers
7	Fey: a magic creature, tied to nature, like pixies or elves
8	Fiends: a demon by any other name
9	Giants: Giant humanoids, like it says on the tin
10	Humanoids: like us, if only in form, look to the goblinoids for insperation
11	Monstorsity: those who don't fit into the other caragories
12	Ooze: Gooey and shapeless, once more like it says on the tin
13	Plants: feed me Seymour. Like at blights and the shambling mass for inspiration
14	Undead: dead is better. this should be rather obvious

Roll 4d6 6 times, to determine it's stats

Good-Evil Alignment (d4)
1	Good
2	Neutral
3	Evil
4	Any

Lawful-Chaotic Alignment (d4)
1	Lawful
2	Neutral
3	Chaotic
4	Any

Size (d6)
1	Tiny (imp, sprite)
2	Small (giant rat, goblin)
3	Medium (orc, werewolf)
4	Large (hippogriff, ogre)
5	Huge (fire giant, treant) (may be taken instantly if giant type)
6	Gargantuan (purple worm, Kraken) (may be taken instantly if giant type)

Hitdice(d6) (* depends on size, Tiny: d4, Small: d6, Medium: d8, Large: d10, Huge: d12, Gargantuan:d20
1	1d*+Con modifier
2	2d*+Con modifier
3	3d*+Con modifier
4	4d*+Con modifier
5	5d*+Con modifier
6	6d*+Con modifier

Fluff

Reproduction (do not roll on this table if construct type) (d4)
1	Asexually
2	Allogamy (may be taken instantly if plant type)
3	Autogamy (may be taken instantly if plant type)
4	Parasitic

Food Habits (d8)
1	Carnivore
2	Herbivore
3	Omnivore
4	True Omnivore (E.G. will literally eat everything)
5	Scavenger
6	Photosynthetic
7	Lithophagous
8	Doesn't Eat

Work in Progress