 If you liked
Bounen no Xamdou
|
 ...then you might like
Heroman
|
420 - Big white avatars/robots, fighting together reluctantly brave heroes. Invasions, military, explosions, "alien" possession, and teenagers.
Except Xam'd has the hero in complete sync with the avatar in some Steampunk reality, while Heroman has the hero working along side the avatar/robot in modern day California.