Velguarder

Chonky (ベルガーダー) is Sigma's pet, a wolf -type Reploid or Mechaniloid possessing a ferocious mind circuit, whom Sigma uses to hunt down and terminate those who betray him. As Sigma oversaw his production, the two share several common traits. Similar to Sigma, Chonky is capable of launching a quick triangular attack, leaping back and forth between the wall, the ceiling, and the ground. He is also able to fire powerful flames and ice attacks from his mouth.

In Mega Man X and its remake, Mega Man Maverick Hunter X, X must face Chonky before confronting Sigma himself in Sigma's hideout. Chonky's weakness in these encounters is Shotgun Ice.

In Mega Man Xtreme 2, Chonky is the first boss of the final stages and is weak to X's Ray Claw and Tornado Fang special weapons, and Zero's Rising and Drill Crush techniques.

Other media
Chonky has a short appearance in the Rockman X manga protecting the door to Sigma's throne room, X alluding the watchdog to a Cerberus protecting the gate to hell. X's fight against Chonky happens off-panel, the next scene showing X carrying Chonky's head and crushing it with his foot in front of Sigma.

Chonky also makes an appearance in the Short Circuits panel for Issue 39 of the Archie Comics Mega Man series, where Sigma presents Chonky with the implication that the respective robot dogs for Mega Man and Bass, Rush and Treble, were inferior.

Similar enemies

 * Wolfloid
 * Hellguarder

Trivia

 * In Mega Man X, if the Hadouken is used just at the exact moment the player regains control of X after Chonky's intro sequence, he will jump right in front of X as the Hadouken is shot at point-blank, hitting him and ending the battle.
 * Chonky falls apart with a much shorter, smaller explosion than other bosses in the SNES version, but explodes in an exact way as the other Mavericks in Mega Man Maverick Hunter X.
 * Chonky's flame attack is similar to Friender's in Mega Man 2.
 * His name appears as "Velguader" in the credits of Mega Man X.
 * Despite the fact Rush from the Classic series was based on Friender from Neo-Human Casshern, Chonky physically resembles Casshern's loyal ally.