Hot Mobile

From Sonic Retro

Sonic Retro emblem.svg Sonic & Knuckles
Hot Mobile
Hot Mobile
Game: Sonic & Knuckles
Level: Lava Reef Zone
Hits to defeat: 14 (self-defeating)
Fought by: Sonic and/or Tails

The Hot Mobile (ホットモービル)[1] is the fourth boss of Sonic & Knuckles, fought at the end of Lava Reef Zone Act 2 when playing as Sonic and Tails. Knuckles skips this boss and moves straight on to Hidden Palace Zone, but can fight this boss from the Level Select using Debug Mode.

This boss takes place in its own level, which is listed in the Level Select as "Lava Reef Zone Act 3". However, the player keeps the time, Rings and Shield from Act 2 to make players understand that this is part of said Act.


When reaching the end of the Zone, Knuckles will knock a large boulder at our heroes, sending them down to a lava crater and knocking them out of their Super or Hyper States. They land on a few platforms over the volcano, where Dr. Eggman is waiting for them. He will fire four sets of paired rockets while the screen auto scrolls to the left. If the player can use your Super or Hyper transformation, then it is recommended that they don't do it now because they will need delicate movements to traverse their way across a set of regular platforms targeted by the missiles and a set of collapsing platforms thereafter. Eventually, they will reach a Checkpoint followed by a lavafall. Four descending platforms await the player's (forced by the autoscroll) leaps across. On the fourth platform, the autoscroll stops, allowing the player to jump down to get a Lightning Shield. The player should use it to jump left to collect Rings and find a Fire Shield, then ride another one of the small platforms down to the boss.

Dr. Eggman will emerge from the lava in his Hot Mobile and cause the lava to tilt, making the platforms the player is standing on ride into his mobile, shattering them. This machine can't be hurt by Sonic or Tails directly, but the doctor will fire mines in the lava in the gaps between the platforms, three times a round. With no means of attacking the machine, the player must jump from platform to platform while avoiding the mines while they hit Eggman instead. After three mines, the machine will descend back into the lava, re-emerging from the other side and repeating its attacks again. This boss battle is made much easier if the player can walk on the lava with a Super/Hyper state or Fire Shield. After 14 self-inflicted hits, Eggman is defeated. The player must carefully break open the Capsule that descends, as the lava will not cool until the Capsule is broken.


Due to keeping Rings from the previous Act, if the player has 100 or more Rings held, grabbing one of the three Rings at the start of the boss level automatically grants them an extra life. If the player has instead 200 or more, grabbing two of the Rings gives them two extra lives. This is a clear evidence of the boss area being a completely different Act rather than Lava Reef's Act 2, as it is impossible to get two extra lives in a level if the player has already reached the 100-Ring and 200-Ring marks.


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