- “This Morty is believed, by some, to be the One True Morty.”
- —In-Game Description
What sets this Morty apart from every other Morty is his appearance. He sports a distinctive mohawk, golden eyes, a white robe and a bionic left arm, also painted gold. His hand appears in either the position of the cross from Greek Orthodox depictions of Jesus, or the gesture of discord from Buddhist mudras. The shell Egg Morty used serves as a necklace.
- His appearance is based on the "One True Morty" comics from the Rickstaverse Instagram.
- The 'One True Morty' was a quasi-religious figure worshipped by the Mortys held in captivity by Evil Rick and Evil Morty in "Close Rick-Counters of the Rick Kind". Morty C-137 is believed to be the One True Morty by the believers after he gives an impassioned speech to the captives.
- The stats in Pocket Mortys show that The One True Morty originates from the Dimension C-568.
- In-game, he's inspired by both the Magikarp/Gyarados Pokémon evolutionary line(the very weak Egg Morty turns into the comparatively much more powerful The One True Morty)and legendary Pokémon(as only one is available per player).