Tenno: space ninjas coming in all variety of Power Ranger types
Grineer: the reason why cloning is a bad idea and Bombards are from hell
Corpus: old greedy fucks just doing business
Infested: Mushroom like zombies
Stalker: He never fucking appears on time
Nef Anyo: the Corpus version of a Nigerian prince
Lotus: Space mom
Alad V: he greedy for the armor and is wrinkly