Justice League Action Season 1 Episode 29
Mxy's Mix-Up
As the Justice League tries to protect the United Nations from Gorilla Grodd gorilla army, Mister Mxyzptlk pops up from the fifth dimension and thinks it would be great fun to....
Guest Stars
P.J. Byrne
Firestorm (voice)
Stephen Tobolowsky
Professor Stein (voice)
Natalie Lander
Stargirl (voice)
David Sobolov
Gorilla Grodd (voice)
Gilbert Gottfried
Mr. Mxyzptlk (voice)