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Sonic News Network
Sonic News Network

The Mecha Sea Lion[note 1] (メカアシカ[1] Mekaashika?) is a character that appears in the Sonic the Hedgehog series. It is a Master Robot created by Dr. Robotnik during the second South Island incident.


The Mecha Sea Lion is a seal-based Master Robot; therefore it is painted mainly gray metal. It has three fins in total: two at the front and one at the rear. The front ones can be seen to be connected by bolts. It has six black/white hairs on his face as whiskers, and a pair of black sunglasses covering its eyes. In addition, it has a red inflatable nose.


Sonic the Hedgehog 2 (8-bit)

In Sonic the Hedgehog 2 (8-bit), Dr. Robotnik created the Mecha Sea Lion in an attempt to destroy Sonic the Hedgehog in the Aqua Lake Zone. Unfortunately for him. Sonic managed to destroy the robot.

Powers and abilities

The Mecha Sea Lion is capable of blowing up its nose like gum and spewing it out as an explosive. In addition, it can replace that nose with others that it has stored in its body. It is seen that it is also very fast, since it can carry Sonic preventing him from being released.


The Mecha Sea Lion cannot withstand its own blasts, and being exposed to them too many times will completely destroy it.


The Mecha Sea Lion is the Master Robot of Aqua Lake Zone in Sonic the Hedgehog 2 (8-bit) and the game's third overall boss. The player faces it as Sonic the Hedgehog.

Boss guide

The player will encounter the Mecha Sea Lion at the end of Aqua Lake Zone Act 3. To hit the boss, the player must jump on the red ball while the robot inflates it. After being hit, the Mecha Sea Lion will try to get closer to the player. It can then jump on Sonic and damage him. To avoid this, the player has to jump on the boss's nose. The Mecha Sea Lion will start to bounce Sonic off a ball and launch him to the opposite end of the arena. Then it will start to inflate the ball again. If the player does not stop the robot, it will throw another explosive ball at them. The player still has a chance to destroy the ball with a Spin Jump.

After six hits, the Mecha Sea Lion will be destroyed. The player can then destroy the Prison Egg and proceed to the next Zone.


System Name Artist(s) Music Length
Master System N/A Masafumi Ogata, Naofumi Hataya, Tomonori Sawada
Game Gear N/A Masafumi Ogata, Naofumi Hataya, Tomonori Sawada


  1. The name is a fan-localization of the Japanese name, which is the only one currently available.


  1. Sonic the Hedgehog 2 (Game Gear) Japanese instruction manual, pg. 28.