It is assumed that Onix was caught between these two periods during the mass catching for the National Dex. Due to his high level it was assumed to be caught in Victory Road.
Onix was swapped in over Khole to be used for Rock Smash. It was shown using Rock Smash in the Cerulean Cave.
Onix was shown battling Mewtwo, using Dragonbreath to deal damage.
- Rock Smash (Part 51 [1/2] - Present)
- Dragonbreath (Part 51 [1/2] - Present)
- Slam (Part 51 [1/2] - Present)
- Iron Tail (Part 51 [1/2] - Present)
- Sandstorm (Unknown)
- Rage (Unknown(
Post-Let's Play Fate
In May of 2016, Emile revealed that an unspecified accident deleted his FireRed save file shown in the LP. Consequently, Onix and the rest of Emile's team were lost forever.
- Onix was the only Non-Main Team Member to battle against a legendary Pokemon.
- In addition, he was the only Non-Main Team Member to battle Mewtwo.