Ultimate Spider-Man - Season 1 Episode 17 -

When Phil Coulson wants the heroes to report to the S.H.I.E.L.D. ice base for winter survival training, Spider-Man and his team sneak off for a vacation on a deserted tropical island that Nova found on the S.H.I.E.L.D. database. However, they soon realize that there is an inhabitant on the island who sees them as his new playmates... and does not want them to leave again.