Leadership cohort

[LordDeath666]

Is a cohort just another character with feats and spells and stuff like that

[Venger]

you treat a cohort just like a pc, he has all the same stuff you have, but he's vulnerable to diplomacy.

[Kelb_Panthera]

Is a cohort just another character with feats and spells and stuff like that

With a very few printed exceptions in the feat's write-up, a cohort is a character just like any other PC or NPC. He gets xp slightly differently and is capped at your level -2 but that's pretty much it.