Superman; Batman (guest appearance); Lana Lang (guest star); Lois Lane; Jimmy Olsen; Superboy (flashback); Adam Newman (intro, villain, formerly Android X)
Superman; Superboy (flashback); Jonathan Kent (flashback); Martha Kent (flashback); Lois Lane; Jor-El (flashback); Lara (flashback); Krypto (flashback); Lana Lang (flashback); Adam Newman [formerly Android X] (villain, death)