Battle of the Planets #4

In "The Creeping Forest," G-Force investigates the sudden isolation of the island of Malu, only to uncover a sinister network of robot trees and human enforcers enslaving the locals to mine diamonds for the tyrant Zoltar. As the team frees the prisoners, they’re pursued by a massive robot mole, forcing a desperate fight that ends with Zoltar fleeing and the treasure left behind.

In "The Earthquake Menace," G-Force races to California after a sudden quake strikes, only to find themselves facing a new threat: Zoltar, who seizes control of all communications and declares war on Earth, threatening to sink entire cities unless the planet surrenders. As the team tracks him to his hidden lair, the Phoenix transforms into the Firebird and crashes into the base, seemingly ending the menace—only for the real Zoltar to escape, leaving G-Force to face the aftermath.