CharacterBug-Eyed Bandit (Bertram Larvan) (villain), Professor Helmond Kettering, Isis (Adrianna Tomaz), Rocket Red, Dr. Polaris, Panda (Doctor Potter), Frankenstein's Monster, Wizardo (Howard Crane) (villain), Jason Woodrue (Plant Master) (villain), The Panther (villain), Mrs. Choi (Ryan's mother), Bob the Monitor, Saul Cartwright, Eclipso (Jean Loring) (villain, cameo flashback), Xotar (as Swami Vedah) (villain), Donna Troy, HEAVEN CONSTRUCTS: Blue Beetle (Ted Kord), Head, Chronos (David Clinton) (villain), Hal Farmington), Panda (Dr. Potter), Dove (Don Hall), Yawen, Copernicus, Vigilante, Kame-Komori (villain), Doctor Martin Campbell, Gosana (villain), ORKA, Copernicus (dog), Crimson Avenger (Lee Travis), Jason Todd, The Head, Ryak (a Linear Man), Claude, Fiddler (Isaac Bowin), Dr. Thomas Dinawa, The Twists (Benji Stark, Judomaster, Thinker (Clifford DeVoe) (villain), Monitor, Adolph Hitler, Phantom Lady, Atom (Ray Palmer) (flashback), also as Digger), Doctor Thomas Dinawa, Ventriloquist (Scarface, Ion (Kyle Rayner), Dr. Martin Campbell, Arnold Wesker), Atom (Ryan Choi), Dwarfstar (Sylbert Rundine) (villain), Chronos (David Clinton), cameo), Neron (flashback, Glennan Johnston, Star Spangled Kid (Sylvester Pemberton), Captain Boomerang (George Harkness, The Man in the Ion Mask (villain), Dean Mayland, Red Hood, Captain Nazi, Flash (Barry Allen)
Series TitleThe All New Atom: the Hunt for Ray Palmer