Yes, Ash does allow his Turtwig to evolve into Grotle in "Pokémon DP (Diamond and Pearl) Battle Dimension." Ash's Turtwig will evolve into Grotle in the episode that is titled "Aiding The Enemy" whic is episode number 1,148 and according to the Japanese airings it is episode number 100.
To evolve turtwig [pokemon pearl/diamond] level it up to level 16.
Yes, Ash's Turtwig evolved into a Grotle right before Season 11: Pokemon Battle Demension ended. He now uses his Grotle during Season 12: Galatic Battle.
No, Chimchar remains a Chimchar during the whole Battle Dimension season.
he evolves into Torterra! BY I.M
Level 18
level 18
level 18
18 then 32
on episode 100
Turtwig evolves into Grotle at level 18, then Torterra at level 32.
Turtwig-18-Grotle-32-Torterra
In Pokémon DP (Diamond and Pearl) Battle Dimension Ash does have his Turtwig evolve into Grotle. Turtwig evolves into Grotle in the United States episode that is titled "Aiding The Enemy" and is episode number 1,148 however according to the Japanese airings it is episode number 100 and the title is "Naetle, Hayashigame... and Dotaidoise!"