...Rick Prime is the overarching antagonist and original, most toxic version of Rick Sanchez in Rick and Morty. He is the grandfather of the show's main Morty, the inventor of interdimensional portal travel who gave it to the multiverse, and the killer of Rick C-137's original wife and Origins and Nature The First Inventor: He successfully created interdimensional portal travel early on, choosing to abandon his family to pursue infinite godhood across the multiverse. Pure Nihilism: Unlike other Ricks who mourn or find attachment, Rick Prime embodies an emotionless, absolute form of nihilism, believing that caring about anyone—even family—is a weakness. The Catalyst for C-137's Vengeance: He approached the main series' Rick (C-137) to offer him portal tech. When C-137 refused to abandon his family, Rick Prime dropped a bomb that killed C-137’s wife Diane and daughter Beth, triggering a lifelong multi-dimensional revenge hunt. Relationship to the Main Plot The Prime Dimension: Rick Prime left his original universe (the "Prime Dimension"), leaving behind Morty. Rick C-137 eventually moved into this abandoned dimension to live with that Morty while continuing his secret search for Prime. The Omega Device: Prime built a weapon capable of erasing a person across every single timeline in the infinity of the multiverse.