These aerial arsenals circle around Sonic's front and let loose with laser beams and missile salvos. Sometimes, they get a little too caught up in attacking and forget to keep an eye out for obstacles behind them. Whoops! — Description, Sonic Unleashed
The Aero-Chaser, also known as the Egg Chaser, is a recurring enemy in the Sonic the Hedgehog series. It is a mass-produced Badnik model created by Dr. Eggman which is capable of high-speed flight and possesses several destructive armaments.
In Sonic Unleashed and Sonic Generations, the Aero-Chasers are humanoid robots with sphere-shaped torsos and a round head integrated into them. They each have three eyes and a row of green lights on their heads that resemble teeth. They have two rather small legs on the bottom of their bodies and a small arm on each side of their torsos. On their backs, connected at their shoulders, they have a pair of large triangular jetpacks, about twice the size of their torso. They are also all colored cream and lime, and they have cyan eyes.
In Sonic Colors, the Aero-Chasers closely resemble Egg Pawns. They have ball-shaped torsos with a hemisphere on top of them that act as their heads. They also wear blue, single-lensed goggles over their eyes. They also have large feet with short legs and jetplane-like wings for arms. On their backs, they have large cylinder-shaped jetpacks. They are also all colored lime and have black underbellies.
In Sonic Forces, the Aero-Chasers look like blue Egg Pawns from said game. As such, they have completely egg-shaped bodies with no heads. They also have long configurable laser cannons for arms, thin legs, black visors over their red eyes, and two large cylinders on their backs as jetpacks.
In this version, the Aero-Chasers always appear in groups of three. Their standard attack is shooting laser beams down their lane towards Sonic, though they can be dodged with a well-timed Quick Step. Additionally, they can shoot missiles into the ground to create firepits (which can be dodged by jumping or Quick Stepping) or set up electric fields (which can be dodged by jumping). The player can only damage the Aero-Casers by knocking incoming Egg Fighters into them with the Sonic Boost which will stun them for a moment. Usually, an Aero-Chaser has to be hit twice before it is destroyed. However, they will sometimes destroy themselves by hitting an obstacle behind them. Whenever an Aero-Chaser is destroyed though, another will appear to take its place, but only until the player leaves their section, upon where they depart.
In this version, only one Aero-Chaser appears in each encounter. They attack by either shooting large laser beams down their lane towards Sonic (which they can be dodged with a well-timed Quick Step) or by shooting missiles that home onto Sonic (which can be dodged by jumping at the right time). The player can in this version attack the Aero-Chasers directly with either the Homing Attack or Sonic Boost.
In this game, the Aero-Chasers appear in groups of two-to-three where they will attack by shooting lasers like they did in Sonic Unleashed. Also like in Sonic Unleashed, when the Aero-Chasers appear, they get up in front of the player while the player starts to auto run until they are through the section with the Aero-Chasers. Also, the player can only damage the Aero-Chasers by knocking incoming enemies into them with the Boost, though this is only possible in rare cases. Even if an Aero-Chaser is destroyed though, another one will only appear to replace it; it is only until the player leaves the section with the Aero-Chasers that they will leave.
In the Sonic Simulator, there will pairs of Aero-Chasers that sometimes deploy a field of electricity on the player's path (much like in Sonic Unleashed) which can be evaded by jumping.
In Rooftop Run Act 1, the Aero-Chasers will appear before Classic Sonic as stationary enemies and will attack with enclosing laser beams. These lasers, however, cannot penetrate walls or platforms. The Aero-Chasers can also easily be destroyed with a Spin Jump. In Rooftop Run Act 2, the Aero-Chasers behave much like they did in Sonic Unleashed and Sonic Colors, though they only attack with their lasers. The player can only damage them by knocking incoming Egg Fighters into them with the Boost. This time around however, no Aero-Chasers will come to take the destroyed ones' places.
Sonic & All-Stars Racing Transformed
In Sonic & All-Stars Racing Transformed, the Aero-Chasers in this game retained much of their appearance from Sonic Colors. They can be found on the race course Galactic Parade where they serve as obstacles, particularly for leading racers, by shooting lasers on one side of the stage and slowing down those they hit. However, these lasers are far apart, making it possible for the racers to drive between them; this is also due to them being massively scaled up in size compared to their prior appearances.
Sonic Forces: Speed Battle
In Sonic Forces, the Aero-Chasers from Sonic Forces appear on the race tracks. In gameplay, they act as stationary obstacles for the player to run into, perpetually floating in midair. However, they do not attack the player and can easily be destroyed using the Spin Jump.
In gameplay, the Aero-Chasers are encountered more frequently during the stages than in other games. Other than that, they behave much like they did in Sonic Colors, namely by staying ahead of the player during Auto Running sections while firing lasers down the lanes the player is using, only to depart from the scene when the player leaves their section. It is also impossible to attack the Aero-Chasers under any circumstances in this game.
The Aero-Chasers tend to get so caught up in attacking their targets that they forget to keep an eye out for obstacles behind them, making them prone to crash into obstacles coming up from behind them.
Powers and abilities
Due to their built-in jetpacks, the Aero-Chasers are capable of high-speed flight. They can fly at speeds rivaling that of Sonic's running speed, both when moving forward and backward.
The Aero-Chasers have a wide range of armaments built into them. Their main weapons are two laser cannons that can fire powerful laser beams with incredible range. They can also launch rockets from their jetpacks which can either home onto their target, create a wall of fire upon impact, or set up trap-like mines that will create an electrical field between them.