Sean Marshall is Cody's teammate and swimming rival. Cody defeats him at the major meet and breaks the state speed record, but the transformation exposes scales on Cody's body. Sean notices the evidence, suspects cheating, and follows Cody while determined to discover the truth.
Tim Redwine has 10 screen credits in a career dating back to 1991. Signature works include Family Secrets, Goobers!, P.U.N.K.S. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.