Guest Stars Chris Gauthier as Vincent Tembi Locke as Grace Monroe Felicia Day as Holly Marten Wil Wheaton as Dr. Isaac Parrish Ming-Na Wen as Senator Michaela Wen Wallace Shawn as Dr. Warren Hughes Aaron Douglas as Dr. Ray Darlton Quinn Lord as Young Zane Nicholas Elia as Young Isaac Burke Jurjaks as Young Fargo Co Starring Michelle Creber as Radical Racoon Teammate Nico McEown as Rico Kevin Mundy as Military Guard Nico Cortez as Jo's Dad Peter Bundic as Eddie Jonathan Potts as Dr. Curtis Ward Tammy Hui as Teacher Alexander Kambolis as Juan Jessica Gonzales as Young Jo Michael Warren Choi as Awesome Possum #1 Tessamay Hartley as Awesome Possum #2 Alyssia Ellis as Awesome Possum #3
