Foster's Home for Imaginary Friends Easter Egg - Pikachu Reference

In the episode when Eduardo runs away because they call him scaredy-pants, and joins Terrance on the junkyard imaginary friends battle championship, Wilt , Bloo, Mac and Coco come to visit him. Right after they get in the big box (the part when a nerd tells Ed, Edd and Eddy that the creature inside the box is very dangerous), you will notice that the creature is quite similar to Pikachu from the Pokemon TV series. At one point he will zap them all with electricity, just like the original Pikachu does (but the original one doesn't have tentacles, though).