Jason Marsden

Raymond “Renny” Marr (voice/uncredited)

Grimp

Spunky Spencer (voice)

Bart Allen / Impulse (voice)

Bart Allen (voice)

Impulse / Ray Palmer (voice)

Impulse (voice)

Impulse / Atom (voice)

Impulse / Lead Singer (voice)

Impulse / Kid Flash / Atom (voice)

Kid Flash (voice)

Bart Allen / Kid Flash (voice)

Bart Allen / Lok-Ron (voice)

Kid Flash / Thomas Tompkins (voice)

Kid Flash / Danny Chase (voice)

Kim

Chester McBadbat (voice)

Guy #1 / Monster (voice)

Nelson Burkhard

Sumo / Brian / Belson (voice)

Student #3 (voice)

Rich Halke

Teenage Clark Kent (voice)

Young Clark Kent (voice)