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It hangs from the ceiling before dive-bombing Sonic

— Description, Sonic the Hedgehog Encyclo-speed-ia

The Batbrain[1][2] (バサラン[3] Basaran?) is an enemy that appears in the Sonic the Hedgehog series. It is a mass-produced, bat-based Badnik model created by Dr. Eggman. Batbrains hang out in dark caves, waiting for its victim to get below it and then attack from above.


Batbrains, as their name implies, are robotic bats with wings stretched over their bodies, showing only the tip of their blue heads. Firm claws ensure these Badniks stay on the ceiling and they each have an engine on their backs for propulsion. Their wings, feet and engine are metallic gray in color, while their bodies are dark blue. In all versions of Sonic Lost World, Batbrains also have small mouths with tiny fangs.

Game appearances

Sonic the Hedgehog (16-bit)


The first appearance of this Badnik was in Sonic the Hedgehog (16-bit), where it served as an enemy. This time around, this Badnik is referred to as Batbrain[1] (バサラン[3] Basaran?). In this game, the player encounters them in the cavern sections of Marble Zone.

In gameplay, Batbrains hang on the ceiling, waiting for a target. When Sonic is spotted, they drop down from their roost, unfold their wings, and flap towards him to cause damage upon touch before returning to the ceiling. They will cling onto another ceiling if they fail to do any damage however.

Batbrains do not pose a huge threat and are easily dispatched before or after their landing with a Spin Jump. Upon their destruction, they release an Animal and reward the player with 100 points. However, they can easily get in the player's way, especially in challenging platforming sections.

Sonic Jump (2012)

In the 2012 remake of Sonic Jump, Batbrains can be found in Blue Sky Zone. In this game, they act like they did in the original Sonic the Hedgehog, hanging from platforms and clouds below until they drop down and start flying at the player when the playable character gets close to them. These badniks can only be defeated by jumping into their underside.

Sonic Lost World

In the Wii U version, PC version and Nintendo 3DS version of Sonic Lost World, the Batbrains return as enemies. During the events of the game, Dr. Eggman's Badniks, including the Batbrains, got hijacked by the Deadly Six.

In gameplay, the Batbrains appear in Windy Hill Zone 3 in the Wii U/PC version of the game, and Windy Hill Zone 2 in the Nintendo 3DS version. Unlike in previous games though, Batbrains here attack in groups. They are located in the tubular sections where they hang from a surface until they drop down to attack the playable character. They can be defeated with any kind of attack. Also, upon their defeat, they release an Animal.

Powers and abilities

Thanks to their wings and rocket thrusters, the Batbrains are capable of flight.

In other media

Sonic the Comic

A late Batbrain model, from Sonic the Comic #131. Art by Richard Elson.

In the Sonic the Comic series published by Fleetway Editions, the Batbrains were a part of Dr. Robotnik's Badnik army before, during, and after his rule of Mobius. Because of the different artists, Batbrains had sometimes a slightly, but also drastically different look from their game counterparts. While he was stationed on Flickies' Island, Robotnik started to build more powerful and dread-looking Batbrains.

Archie Comics

Main article: Bat Brain (Archie)

The Bat Brain, from Sonic the Hedgehog #0.

In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the Batbrains were among the first generation of badniks produced by Dr. Robotnik. While Dr. Eggman would go on and make more advanced Batbrains, the classic ones were eventually rendered obsolete and got decommissioned.

Sonic X (comics)

Main article: Batbrain (Sonic X)

Batbrains, from Sonic X #10..

In the Sonic X comic series published by Archie Comics, Batbrains made a small appearance. While in a simulation of the Marble Zone, Sonic came across several Batbrains, which he easily defeated.


Tomy S&K pack Splats.jpg

The toy company Tomy released a Batbrain figurine as part of a line of figurines for Sonic & Knuckles. The series had a total of twenty figurines, divided by five packs of four. The Batbrain figurine was available in the pack with Splats, Sonic, and Tails.


Missing Bat Brain.png
  • Batbrain was supposed to appear in the 8-bit version of Sonic the Hedgehog, but was removed from the final game. However in Game Gear version, unused sprites of Batbrain are found from game's code. Along with Roller, Batbrain is one of badniks that does not appear in the 8-bit version.
  • Like the Orbinaut, the Batbrain does not appear in neither the European or North American game manuals. Its English name thus comes from comics and other merchandise. Similar to the aforementioned Badnik, it is known by its Japanese name "Basaran" in Sonic Jam[4] and just "Batbrain" in the British Stay Sonic guide book.[1]







  1. 1.0 1.1 1.2 Wallis, James (4 January 1993). "Robotnik's Badniks". Stay Sonic. Fantail. p. 35. ISBN 978-0140903904. "Batbrain hangs around on roofs in the Marble Zone. Any movement wakes it, and it will flap down noisily to investigate. Beating one or two of them is easy for Sonic, but he's wary of larger flocks — especially if there's a Caterkiller around as well."
  2. Flynn, Ian; Sega (8 December 2021). "Sonic The Hedgehog (16-bit)". Sonic the Hedgehog Encyclo-speed-ia. Dark Horse Books. p. 12. ISBN 978-1506719276.
  3. 3.0 3.1 Sonic the Hedgehog (Sega Mega Drive) Japanese instruction booklet, p. 39.
  4. One of artworks showcasing Caterkiller and Basaran from the Sonic World feature of Sonic Jam.

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