Fusion

Fusion is an option in Completing the Mission, during the "Triple Threat" pathway.

In the option, Ellie and Henry fuse themselves into Ellry to face the Toppat Clan inside the cafeteria of the Toppat Orbital Station. As they challenge the members, only Kabbitz steps in and faces them in a Dragonball-styled battle. Unfortunately, Ellry struggles against their adversary and ends up getting knocked out from the rocket, defusing them back into Henry and Ellie from the sustained damage, and were likely killed.

Fail Message
Normally this goes on for another 3 hours.

Trivia

 * The reference to Dragon Ball Z's long fights was seen as a joke in the fail message.