[quote=@Lord Wraith]
<Snipped quote by Dead Cruiser>

Was it a symbiotic/parasitic relationship like Star Lord's sheet or was it more of a 'they had always been an alien, just weren't aware of it' deal. The latter could be quite different and even similar origins can come across as completely different characters provided their abilities, personalities and backstories have enough variance. 
[/quote]

The latter, but the alien origin was the main thing separating him from being too similar to JunkMail's character, who is also a big monster.