The cast of the Netflix movie "We Can Be Heroes" includes:
- Vivien Lyra Blair as Guppy, the youngest daughter of Sharkboy and Lavagirl with "shark strength" and water shaping abilities.
- YaYa Gosselin as Missy Moreno, the main character.
- Pedro Pascal as Marcus Moreno, Missy's father.
- Priyanka Chopra Jonas as Ms. Granada, the leader of the Heroics Program.
- Lyon Daniels as Noodles, a boy who can stretch his body.
- Andy Walken as Wheels, who has super strength.
- Hala Finley as Ojo, a girl who can draw the future.
- Nathan Blair as Wild Card, who has many powers but lacks control.
- Isaiah Russell-Bailey and Akira Akbar as Rewind and Fast Forward, twins who can alter time.
- Lotus Blossom as A Capella, who can manipulate objects telekinetically through singing.
- Dylan Henry Lau as Slo-Mo, who is always in slow motion.
- Andrew Diaz as Facemaker, who can morph his face into anyone.
- Adriana Barraza as Anita Moreno, Missy's grandmother.
- Christian Slater as Tech-No.
- Boyd Holbrook as Miracle Guy.
- Taylor Dooley as Lavagirl.
- Jeffrey J. Dashnaw as Sharkboy.
Guppy, portrayed by Vivien Lyra Blair, is a standout character as the youngest with "shark strength" and the power to shape water.