Sentinel
Marvel. All written by Sean McKeever and drawn by Udon.
1 Salvage (Digest; 1-6).
[From Marvel Comics: It stinks to be Juston Seyfert. He's tormented
by the seniors at Antigo High School. He has no luck with the ladies. He's
dirt poor. He lives in his father's junkyard. And his mother walked out
on him and his family years ago. Without cash for standard teenage pursuits,
Juston must find his own fun. On one of the many days spent scavenging in
his father's salvage yard, he finds the ravaged remnants of a giant robot
programmed to exterminate mutants. But what could a downtrodden, disillusioned
high-school sophmore possibly do with a 30-foot-tall engine of destruction?
Sentinel shows one contemporary teenager's struggle to find his own voice,
to stand up for himself and to discover what it means to be a hero in the
21st century. Oh yeah... it's also about a boy and his giant robot!]
2 No Hero (Digest; 7-12).
[From Marvel Comics: Juston Seyfert's life is changing faster than
he could have ever dreamed. But it's not just acne and algebra tests that
this high school sophomore has to cope with... Juston has a secret bigger
than anyone in his hometown of Antigo, Wisconsin, could possibly have imagined:
He’s discovered the battle-ravaged remains of a Sentinel – a gigantic
mutant-hunting robot built by the government – in his family's junkyard
and has used his prodigious technical skills to put the mechanical marauder
back together! After being pushed too far by school bullies, Juston used
the robot to stage an elaborate mock attack on his high school... a charade
that left him looking like the hero to his fellow students when all was
said and done! Now, in the aftermath of the "attack," Juston must
decide his next move. Has the Marvel Universe really given birth to a new
hero... or to a monster?] 
3 Past Imperfect (Digest; 1-5). [From Marvel Comics: he globally praised tale of a boy and his 'bot returns! After using his refurbished government weapon of mutant destruction to make himself popular, you'd think Juston Seyfert would be on top of the world. Instead, he's run away from home, torn up inside by the guilt brought on by his selfish acts. Now in search of his mother, who left his family at an early age, Juston must figure out what to do with his life. And if he doesn't figure it out soon, there are a couple government types who would be more than happy to figure it out for him!] 