Leo, Raph, and Mikey had invited Donnie to a Space Heroes marathon, but he insisted on upgrading his drone. Donnie had been so invested in his work that he forgot it was Marathon Day! April was supposed to come over for the Marathon, but her parents were making her babysit her little sister while they went on vacation for a businesstrip. So she brought her little sister over, too!

Currently, Donnie was sitting in his lab

He then hears someone approach his lab.

Donnie: “Who goes there?”

Donnie asks in an irritated voice, not turning around to see who it was.

You were a Midnight Fury Dragon Hybrid