This "horror-themed" Rookie was actually created by my then 5-year-old son in response to Mange (aka SkullRenamon) and SkullGatomon. I originally intended him as a replacement for Toadmon, even going so far as to give him Frankenmon as his Ultimate form and make Toadmon a villain wo reforms and joins the good guys...but since I'd already done that FAR more effectively with Gazimon, I canned that idea and just made them both good guys.
Meanwhile, my son now insists that his Ultimate form is something named "Zombiemon," so, since he DID create the Rookie and Champion forms, I'll have to figure out what Zombiemon looks like...
For some reason, though, whenever I look at Skullmon, I hear Tentomon's voice...weird.