AnimationEpic had a video called "Hunt for Season 2 Extravaganza", which was some kind of scavenger hunt leading to II2's premiere.
The two screenshots above were from the video, and the DuncanEpic channel's description says this:
"Next Step - You have made it far! But not far enough. You wanna see who is in season 2 right? RIGHT? Anyway, in episode 18, what character gave up his body for MePhone4? Go to his wiki page! NOW!" (Spoiler alert: it's MePhone4 and he's not in season 2!)