Giga (Giga #2)

Evan should never have gone back to the dead Giga, but he did, and now he's a murder suspect. Meanwhile, Legs is deteriorating at an alarming rate. The Red King - the oldest and largest of the Giga - is revealed, prophesied to unleash hell on a world whose sins the great mech took into itself centuries earlier. As an old friend of Evan's returns, he devises a desperate plan to locate the dead Giga's real killers.