Zyudenryu Bunpachy (獣電竜ブンパッキー) is the eighth of the Zyudenryu ("Beast Electric Dragons") from the Super Sentai series Zyuden Sentai Kyoryuger (2013). The mecha takes the form of a Pachycephalosaurus with a distinctive armoured dome on its head and belongs to Tessai, Kyoryu Grey — one of the "Spirit Rangers," the ghosts of fallen ancient Kyoryugers. In the US adaptation Power Rangers Dino Charge / Dino Super Charge (2015/2016) the same mecha appears as the "Pachy Zord," the personal Zord of the Graphite Ranger (Prince Phillip). It functions as an auxiliary support Zord and combination component rather than a standalone main Megazord.

Its defining feature is the ball-shaped head dome. In Battle Mode the forehead plate detaches and the tail becomes a morning-star flail (a ball and chain). As a combination part, Bunpachy attaches as the Kyoryuzin's left arm and contributes the forearm-mounted "Bunpachy Ball." Together with Ankydon (the seventh Zyudenryu, likewise a Spirit Ranger's mecha), it replaces Stegotchi and Dricera as the arms to form Kyoryuzin Kung-fu, armed with the Ankydon Hammer on the right arm and the Bunpachy Ball on the left.

The DX toy was released in 2013 by Bandai Japan as the "DX Zyudenryu Bunpachy," made predominantly of plastic (ABS/PVC). It shipped with the collectible battery figure Zyudenchi No. 8; the fold-out mechanism of the head ball and tail recreates the ball-and-chain feature, and the Zord plugs onto Kyoryuzin as an arm. In the US, Bandai America sold the same tooling as the "Pachy Zord," bundled with a Dino Charger instead of a Zyudenchi: first within the Dino Charge line (2015) in a very short production run, which makes it sought-after and expensive on the secondary market, then re-released identically in new packaging under Dino Super Charge (2016). In 2024 Bunpachy was additionally reissued as part of the "Western Combo & Kung Fu Combo Full Action Ver." set.