Heavy the Robot

Heavy and Bomb are two robots who first appeared in Knuckles' Chaotix.

Heavy
Heavy is a clunky, silver robot with red oven mitts for hands and gray/black body, who resembles a Coffee Kettle and was Doctor Eggman's chief mechanic. In the game, Heavy was invincible to all attacks, could destroy badniks by just touching them, and could walk on spikes without being hurt, but (as his name suggests) is extremely heavy, causing him to be very slow and unable to jump very high. Heavy's invincibility, however, is actually very handy when used in combination with Charmy's flying (as long as Charmy is the leader).

Bomb
Bomb is a small, black and red bomb robot with arms and legs. His abilities are the reverse of that of Heavy: He is very weak, and explodes when hit (albeit he can regenerate himself almost immediately afterward, while the explosion can damage both enemies and his ally) but is rather quick on his feet (though not anywhere near as fast as Espio) and has a decent height jump.

The two robots claimed to have escaped from the clutches of the evil Dr. Eggman, and are simply trying to help Knuckles and his friends. However no one knows if they speak the truth or if they were simply planted by Eggman to slow them down. After Eggman's demise at Newtrogic High, the duo disappeared and has not been seen since.

Archie Comics
Heavy and Bomb also made appearances in the Sonic the Hedgehog comics, first appearing in the Knuckles' Chaotix 48 page special. After that issue all the Chaotix ended up staying together except Heavy and Bomb who disappeared. They eventually came back, serving in King Acorn's Secret Service under Geoffrey St. John. However, on one mission, the two were reprogrammed to assassinate the Acorn family, and were destroyed by the defending Sonic and co. Later, rebuilt versions of the two were sent to assassinate Mina Mongoose. However, they were also thwarted, and presumed destroyed, although they are never seen being so. The new Heavy was last seen sinking in a lake, while Bomb blew himself up (repeatedly).



Appearance
In an issue of Sonic the Hedgehog there was a short teaser preview for the Knuckles' Chaotix comic special. In this preview, Dr. Robotnik is looking at all the Chaotix on a number of monitors. One monitor shows Heavy and Bomb and they look exactly like they do in the video game. However in the actual comic, Heavy and Bomb received a complete makeover. Bomb became one solid red color and was given eyes and a mouth. Heavy was made very tall and square, with very rectangular eyes and mouth. When they joined the secret service they wore berets. After they were destroyed by Sonic, Robotnik rebuilt them. Their new models looked almost identical to their game designs with the exception that Bomb only had one arm.

Trivia

 * In a minigame in Sega Superstars Tennis, a robot fires out red and black colored bombs, a possible reference to Bomb.
 * Heavy and Bomb were the first robots to turn on Eggman and help Sonic's allies. Others to follow are E-102 Gamma and E-123 Omega.
 * In the Archie Comics, Bomb could not regenerate himself. It is said that Heavy produced new Bombs. The process is that the new shells are in his body and Bomb transfers his artificial intelligence into a new shell, and then Heavy takes him out.
 * Early in the comics, Bomb could never really talk and only spoke through "ping" sounds. But when the Secret Service went to Angel Island, Bomb could speak like everyone else.
 * In Knuckles' Chaotix, Heavy and Bomb can be paired up with any of the other characters, but not with each other (unless the level select code is used).