OMAC (DC Universe)
"In the late 21st century, a group of aliens engineered the construction of a powerful satellite called Brother Eye in order to avert a great disaster threatening Earth. The satellite targeted an unsuspecting stock boy named Buddy Blank. He became the One Man Army Corps, or OMAC. After years of battling any and all threats, Buddy took refuge in a forgotten underground military installation and raised his grandson in isolation from the horrors roaming the terrain above.
Includes a collector button and the right arm of Validus."