Special Guest Stars Timothy Dalton as Dr. Niles Caulder / The Chief Guest Stars Phil Morris as Silas Stone Alec Mapa as Steve Larson / Animal-Vegetable-Mineral Man Alimi Ballard as Josh Clay Will Kemp as Steve Dayton / Mento Dennis Cockrum as Sydney Bloom Madhur Jaffrey as Old Arani Jasmine Kaur as Arani Desai / Celcius Co Starring Bethany Anne Lind as Clara Steele Dave MacDonald as Daddy Ethan McDowell as Agent Charles Forsythe Alan Heckner as Bump Weathers Sydney Kowalske as Young Clara Steele Katina Rankin as Anchorwoman Elizabeth Mears as Marybeth Lesa Wilson as Rhea Lucia Scarano as Secretary David Bielawski as Old Mento Knightly Knox Scott as Kid #1 Noah Jordan Scott as Kid #2 Chaeli Koda as Levitating Kid