It's Snow Problem S01 E04

Ruth Buzzi (as Nandy (voice)) Charlie Adler (as Streamer / Mojo / Big Red (voice)) Max Casella (as Cro (voice)) Candi Milo (as Pakka (voice)) Jim Cummings (as Phil / Ogg / Murray (voice)) April Ortiz (as Dr. Cecilia (voice)) Frank Welker (as Gogg / Earle (voice)) Jussie Smollett (as Mike (voice)) Tress MacNeille (as Esmeralda (voice)) Laurie O'Brien (as Ivanna (voice)) Jane Singer (as Selene (voice))