Ogres

Ogre evolved from a Goblin.

Evolution tree

 * 'Ogre Shaman
 * High Ogre
 * Ogre General
 * Ogre King
 * Oni: Unique species, raises Taboo upon evolving. Has a human-like appearance

According to Wrath the most notable differences in Ogre's evolutions are the sizes. With each evolution gaining more sizes excluding Oni.

Trivia

 * Presumably, Ogre's evolution options just like Goblin's are Ogre Fighter, Ogre Ranger, and Ogre Shaman.