Heroman Vol. 3 (manga)

The Skruggs have begun their invasion of Earth and while mankind panics at this first encounter, Joey Jones and his toy turned mecha, Heroman, lay low while they work out a plan to repel the alien forces. Meanwhile, the Skruggs are not going to wait for the Earthlings to make their move. By taking advantage of some ill-advised meddling by a few Center City students, the Skrugg have begun developing a new weapon to pit against Heroman. But will this new force destroy the Skrugg from within instead?