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