[@Thecrash20]

I know the sheet isn't finished yet, but I'm really intrigued by the current state its in and I have a few questions and ideas I'd like to share.
First off I think you perfected the Sci-Fi element perfectly for a fantasy setting; this gives me endless legion vibes so far which is what I'd like to see in a collaboration of Sci-Fi in a fantasy setting. 

Which brings the question; Do you consider his force power/psychic power to be magic-esq or separate from magic entirely? As an alien it would make sense that their otherwordly powers are foreign to magic, at least on an earthly level. This could determine whether or not anti-magic shit would affect his abilities, how his abilities react to other players, and so forth. 

His overall power is interesting, and considering he is by himself and can make his own army I think his backround would fit best as some outcast of his race (For whatever reason) and ended up upon earth, where he sought the chance to appease his war god by making a new start for himself here and whatnot; joining lancelot's conquest in exchange that Lancelot will aid him in returning to the stars.

I [i]Really[/i] love the concept of him making armies by infecting people. However my gripe with its current build as that they seem to be assimulated completely to fit their standard soldier bill you described. I think it would be more interesting if the mutations weren't as uniform (especially since all of his units aren't human) and maybe something a bit more like Zergs. This is up to you of course, however since we already have two war lords and he does presently have some decent psychic prowess I'd like for him to have a limit on his army. Namely, he cannot possess nor control more then X soldiers at a time. With typical population logic stronger units take up additional space so you'll have a bit more micro managing with your units. 
I'd also prefer if you didn't start with an army, rather slowly built up one overtime. This can be done by 'recruiting' former enemies as a part of his army; overtime giving him a sizable mass that he can replace with each battle.

These suggestions aren't manditory, and I'll wait for you to finish the sheet before reviewing it and giving any other suggestions if needed.