Brandon's Dusclops is Brandon's most powerful non legendary Pokemon
Biography
Dusclops first appeared in Gathering the Gang of Four, where it faced off against Ash's Charizard. After a fierce battle, Dusclops managed to defeat Charizard due to its high defensive power and immunity to Charizard's most powerful move, Seismic Toss. It should be noted that Dusclops is the only Pokemon that was not fully evolved to have defeated Charizard since it evolved from Charmeleon (any battles in which Charizard refused to battle don't count).
In Pace - The Final Frontier, Dusclops provided a considerable challenge for Ash's Bulbasaur, despite having been worn out from battling Charizard. In the end however, Bulbasaur managed to knock out the Ghost type with a Solarbeam attack.