Squirrel Girl
At the time when a Duplicate Squirrel Girl defeated most of Earth's superhumans and banished them to the Negative Zone, she found that she overlooked Hippo. Squirrel Girl assembled Hippo, Agent Venom, Kraven the Hunter, and Rocket Raccoon to help her and her allies make a stand against the Duplicate Squirrel Girl. While the Duplicate Squirrel Girl found Hippo to be "easily-tossable," he and the others bought Squirrel Girl some time to rescue the other superhumans from the Negative Zone and defeat Duplicate Squirrel Girl.