|Full Name||Mandark Astronomonov|
|Current Age||a bit older, than Dexter|
|First Appearance||Dexter's Rival, 1996|
|Family and Relations|
Dee Dee-love interest
Bling Bling Boy-ally
|Suzy, Suzan, King of Darkness, Lovechild|
Mandark appears in this game as the possible main antagonist. He has built a device that will create time holes between Dexter's and Finn's realms, and said heroes must join forces to stop him.
After beating his third boss battle, he is unlocked as a playable character.
|Finn the Human | Dexter | Jake|
|Princess Bubblegum | Dee Dee | Beemo|
|Mandark | Ice King|
|More information on the game will be shown at Fantendo Holiday Showcase 2013.|