Noticed that there is a lack of Neopets/Nicktoons crossovers so I decided to do one of my own involving the Altador Cup, one character for each team.
Chose Rocko for Roo Island because he's a wallaby, a relative to the kangaroo and Blumaroos are based off of kangaroos.
Others in the series:
Faerieland - https://www.weasyl.com/submission/186723
Kiko Lake - https://www.weasyl.com/submission/181807
Kreludor - https://www.weasyl.com/submission/181285
Maraqua - https://www.weasyl.com/submission/185397
Roo Island - (You're there!)
Terror Mountain - https://www.weasyl.com/submission/183607
Virtupets - https://www.weasyl.com/submission/182757