Level 16
Chat with our AI personalities
Marshtomp learns Mud Shot at level 16 which it learns automatically upon evolving if you level your Mudkip to 16 to evolve it. If your Mudkip is level 17 and it evolves, you'll miss the chance for Marshtomp to learn Mud Shot.
It would be hard to beat him without evolving it in to swampert first, because then swampert can learn muddy water. But marshtomp's most effective move should be Mud shot.
Wattson is easy as long as you have a ground type Pokemon like Marshtomp and use ground type moves like mud shot or have a grass type Pokemon like Grovyle or Breloom.
The only Pokemon that can learn Hydro Cannon are: Blastoise, Feraligatr, Marshtomp, and Empolion.
Marshtomp evolves at Level 36.