The Spiny is one of the few Badnik models whose design is not derived from an animal, though comparisons can be drawn to barnacles and anemones.
These robots scuttle about using five grippers located on their underside. The body of the Spiny Badniks are extremely small, with two photo-receptors jammed close together near a red spout at the top of their bodies. Around this spout prong out several triangular metal flaps which can unfold like a flower blooming. Standard Spiny colors are mainly gray with a bit of red mixed in, especially around the spout region.
Sonic the Hedgehog 2
The Spiny Badniks' first appearance was in Sonic the Hedgehog 2. In this game, they can only be encountered in Chemical Plant Zone, where they either appear alone or in pairs. They can be found on the ground or on the walls where they move back and forth.
In gameplay, Spiny Badniks slowly crawl around their domain, waiting for enemies to approach. When a target is sighted, they will stop for second and unfold their flaps, before shooting out a damage-inducing projectile. If a Spiny fires a projectile while sticking to walls, the projectile will fall faster. To destroy or avoid a Spiny, the player must time their jumps just right. Otherwise, the player can destroy these Badniks using any basic attack.
Sonic the Hedgehog Pocket Adventure
In Sonic the Hedgehog Pocket Adventure, Spiny Badniks have a slightly different appearance, being colored pink and white. In this game, they are presented at the only enemies in Secret Plant Zone. Despite their appearance, these badniks have the same attack patterns as in their first appearance.
In the Wii version of Sonic Colors, Spiny Badniks received a slight redesign. In this game, they can be found in Starlight Carnival and Asteroid Coaster, where they normally move along walls. Like in their previous appearances, the Spiny Badniks attack by shooting projectiles, although these projectiles pop out and move much slower than in past games. While these Badniks cannot be Homing Attacked, they can still be destroyed by jumping into them.
In the console/PC version of Sonic Generations, Spiny Badniks retain their appearance from Sonic Colors. In this game, they only appear in Chemical Plant, where they possess the same attack patterns from previous installments. Unlike in Sonic Colors though, they can be destroyed normally. While the Spiny Badniks demonstrate their typical attack patters in the first Act, they also appear in the open 3D areas in the second Act where they can easily be destroyed by the Boost.
When Sonic attacks Spiny Badniks with the Boost or Homing Attack in the second Acts in Sonic Generations, they will display a sad look on their faces one second before getting destroyed.
In gameplay, the Spiny Badniks slowly crawl along the ground or wall and periodically spout projectiles, just like in their debut game. Also, whenever a Spiny is destroyed, it releases an Animal.
Powers and abilities
Spiny Badniks are capable of shooting energy projectiles from the top of their heads and can crawl on surfaces using their grippers. These grippers are so strong that they can stick to any surface, walls and ceilings included, without hampering their speed or attack.
In other media
Sonic the Comic
A single Spiny makes a short appearance in Fleetway's Sonic the Comic's issue 37, as it was discovered by Tails during travelling through the Chemical Plant Zone with the Flock. Using Tails' microputer, Sab opened a security door and was confronted by a bomb flying through the gap. Tails and others dodged the attack, while Sab quickly destroys the Spiny with her gun.