A post for the very first gym leader that you challenge in your journey and both of Brock's closest Pokemon. Onix is his ace in the video games and Vulpix was a Brock's Onix #21 Prices Pokemon Gym Heroes Pokemon Cards Pokemon Card Zekrom EX Zekrom EX (BLACK WHITE RARE) : 172 086 SCARLET AND VIOLET BLACK BOLT ACE GRADING Graded Card N's Zekrom (210 193) (M2a: High Class Pack: MEGA Dream ex) Pokmon Brock s Onix 4 4 Rock Throw My Pokemon Card