G.I. Joe: A Real American Hero (1983)

S2E15 Iceberg Goes South

Deep in the frozen north, the Joes cross paths with Iceberg's girlfriend, who's gathering tissue samples for her uncle's experiments at the Tropadome. When she heads there to deliver her findings, she walks straight into a trap—Doctor Mindbender has converted the facility into a lair for his new army of mutant creatures. Now the Joes must brave the icy wilderness and assault the dome to rescue her before she becomes another test subject in Mindbender's twisted scheme.