The voice cast includes: Kevin Conroy (Batman), Mark Hamill (The Joker), Tara Strong (Harley Quinn), Fred Tatasciore (Solomon Grundy, Mr. Hammer), Troy Baker (Two-Face, Robin), Corey Burton (Hugo Strange), Larry Grimm (Deathstroke), Amy Carle (Poison Ivy) instead of Tasia Valenza.
After making their way through a network of tunnels, the party finds a powerful demonic creature named Yxunomei (Tara Strong).
Tara | Strong Medicine | Four Year Strong | Augustus II the Strong | Tara Conner | John Moore-Brabazon, 1st Baron Brabazon of Tara | Tara Strong | Tom Strong | Tara, Russia | Tara Air | Strong Poison | Tara Lipinski | Strong's Concordance | Strong Bad | William Duncan Strong | Strong-billed Honeyeater | Strong AI | Meghe Dhaka Tara | Hill of Tara | An American Girl: Chrissa Stands Strong | United States of Tara | Tara Morice | Tara Brooch | Strong Vincent | Strong Arm Steady | Maurice Strong | Mark Strong | Brenda Strong | Thomas Preston, 1st Viscount Tara | Ted Strong |
De colores has been recorded by many different artists, including Los Lobos, Joan Baez, Raffi, Nana Mouskouri, Tish Hinojosa, Arlo Guthrie, José-Luis Orozco, Justo Lamas, Baldemar Velasquez, Tara Strong and Rachael Cantu ; as well as being referred to in the Flobots song "Handlebars"
The episode featured guest performances by Jon Benjamin, Max Burkholder, Phyllis Diller, Phil LaMarr, Joe Lomonaco, Tamera Mowry, Anne-Michelle Seiler, Tara Strong, Nicole Sullivan, Gore Vidal, Gedde Watanabe, and Wally Wingert along with several recurring guest voice actors for the series.
Tara Strong was cast as Rikku by the game's English version voice director Jack Fletcher, who had worked with her in other roles before.