Here's our Blue Boy Trigger. I built this model based off the Smash4 Design because I liked some of the redesign. This is supposed to be his armor he wears in the first game.
Barrell Caskett was researching the ruins in Nino Island without the Guildmaster's permission, and found a diamond-shaped object near the entrance. When he touched the object, it melted away and awoke Rock and Data from their suspended animation. As Barrell had broken into the ruins without permission he could not reveal where he had found them, so he took the two under his care. Barrell named him Rock to make a pun with Roll. Rock was raised as Barrell's adopted grandson and as soon as he was old enough he embarked on the life of a Digger, searching for Refractors and other resources for the Caskett family as well as defeating Reaverbots in his many adventures.
Via: http://megaman.wikia.com/wiki/Mega_Man_Volnutt