Does Eric Lange play Plankton in Sponge Bob?

Answer 1

No, he doesn't.

Plankton is voiced by Douglas Lawrence Osowski, Eric Lange is the actor who plays Mr. Sikowitz in Victorious.

In one Victorious episode (Tori Goes Platinum - Part 1), a reporter supposedly recognizes Mr. Sikowitz' voice as Plankton, which he confirms, however this all happens on the story level, this doesn't mean that the actor actually voices the cartoon (plus Sponge Bob isn't even mentioned in the dialogue, this is just an indirect reference to it).

Answer 2

mabye