Krel builds a prototype device that will create a wormhole back to Akiridion-5, but Luug swallows it whole before it can be tested further.
- Tatiana Maslany as Aja Tarron
- Diego Luna as Krel Tarron
- Nick Offerman as Varvatos Vex
- Glenn Close as Mothership
- Alon Abutbul as General Morando
- Uzo Aduba as Colonel Kubritz
- Ike Amadi as Detective Scott
- Guillermo Del Toro as Dr. Muelas
- Nick Frost as Stuart
- Jennifer Hale as Izita
- Colin O'Donoghue as Douxie
- Laraine Newman as Nana
- Oscar Nuñez as Sergeant Costas
- Chris Obi as Loth Saborian
- Cole Sand as Eli Pepperjack
- Charlie Saxton as Toby Domzalski
- Danny Trejo as Tronos
- Fred Tatasciore as AAARRRGGHH!!!
- Frank Welker as Luug
- Steven Yeun as Steve Palchuk
- Aja learns that Morando is on Earth and has allied himself with Kubritz in this episode.
- When Steve auditions for the role of Krel in "Kleb or Alive", he performs a dramatic monologue in which his character has a zombie father. This is a nod to Steve's voice actor, Steven Yeun's major role in the famed AMC zombie-apocalypse series The Walking Dead.
- Morando kills Tronos in this episode.
- Johann Strauss II's famed waltz "The Blue Danube" plays yet again when Luug ends up on the moon.
- Once again, the use of this particular waltz while on the moon is a reference to the 1968 science-fiction film 2001: A Space Odyssey.
- Izita rescues Loth Saborian, but she also learns that Morando is after Gaylen's Core on Earth.
- Barbara Lake makes a cameo appearance when Luug is seen traveling atop of Stuart's taco truck in downtown Arcadia.
Community content is available under CC-BY-SA unless otherwise noted.