Saren's entire plotline in ME1 is fucked from his first scene because Bioware was too retarded to give him both his models.

He's just this tricked out Borg fucker from go, no one questions it. Literally a fucking Geth arm grafted to his body while testifying he had nothing to do with the Geth attack. Climactic final confrontation dialogue is partly incoherent because Saren's talking about upgrades while Shep's going "look what they did to you " and he looks the exact same.

Thank God a modder fixed it.