Dexter's Laboratory/Madagascar

Dexter as Alex
Gir (from Invader Zim) as Marty
Robot Jones (from Whatever Happened to Robot Jones?) as Melman
Mee Mee as Gloria
Jimmy Neutron (from Jimmy Neutron) as Mason
Timmy Turner (from The Fairly OddParents) as Phil
Major Glory as King Julian XIII
Valhallen as Maurice
The Infraggable Krunk as Mort
Kellie (from Hi-5) as Skipper
Tim (from Hi-5) as Kowalski
Nathan (from Hi-5) as Private
Charli (from Hi-5) as Rico
Gary as Teetsi
Mandark as Makunga
Lisa (from the episode "Babysitter Blues") as Gia
Dexter's Dad as Zuba
Dexter's Mom as Florrie
Agent Honeydew as Sonya
Lee Lee as Marlene
Eddie Valiant (from Who Framed Roger Rabbit) as Vitaly
Lieutenant Santino (from Who Framed Roger Rabbit) as Stefano
King Goobot (from Jimmy Neutron) as Dr. Blowhole
Dexter's Monkey as Max
Zim (from Invader Zim) as Joey
Peltra as Nana