Si (yes)
by playing with him
You have him/her as a stater pokemon.
Turtwig, piplup, are the main ones, forgotten the two others
In Pokémon Mystery Dungeon: Explorers of time\ darkness, a good starter Pokémon is Piplup, however I also find Turtwig Totodile and pikachu good
oioipo
Munchlax, Skitty, Meowth, Mudkip, Totodile, Piplup, Squirtle, Bulbasaur, Chikorita, Treeko, Turtwig, Charmander, Cyndaquil, Torchic, Chimchar, and Pikachu
you can find him when your doin mystery forest though it might take some time i think
You probably have all of his moves turned off or he's prone blocked.
Use protect and draining moves and it should work if u have reviver seeds too!!
in explorers of time and darkness: Mudkip, Treecko, Torchic, Squirtle, Charmander, Bulbasaur, Chikorita, Cyndaquil, Totodile, Piplup, Chimchar, Turtwig, Pikachu, Meowth, Munchlax and Skitty. In explorers of sky: all the Pokemon of time and darkness plus Shinx, Vulpix, Eevee, Bidoof and Riolu. P.s Meowth and Munchlax are only partners in sky not as hero
You can get Chimchar as a starter Pokemon in Pokemon Mystery Dungeon: Explorers of Time by selecting it at the beginning of the game when prompted to choose your partner. Chimchar is one of the three starter options alongside Turtwig and Piplup.
Turtwig is a Grass type pokemon.