User blog comment:Cloudthehedgehog12/Prove that Heavy and Bomb replaced Sonic and Tails in Knuckles' Chaotix/@comment-1870507-20110212025013

Actually, Heavy and Bomb are the opposite of Sonic and Tails. Some reasons include: Actually I didn't read the paragraph. But you could say that Heavy & Bomb did a bad replacement of the two.
 * Sonic's fast, Heavy's slow.
 * Tails can die but come back anytime.
 * Tails is not a playable character in his debut game.
 * Sonic & Tails are the main characters of Sonic 2, and Heavy & Bomb are minor characters in Knuckles' Chaotix.