Lock-On Missile

The Lock-On Missile is a weapon that appeared in Sonic Adventure 2 and Sonic Adventure 2: Battle. It is a missile system used by both Miles "Tails" Prower and Dr. Eggman.It is based on E-102 Gamma's weapon system in Sonic Adventure.

Usage
The Lock-On Missile's first appearance was in Sonic Adventure 2 as one of the standard weapons used by Tails and Dr. Eggman. It is laser targeting system of missiles which serves as a part of the weapon arsenal onboard Tails' Cyclone and Dr. Eggman's Egg Walker respectively. On Tails' Cyclone, the Lock-On Missile launcher is the cannon located on the rear, and on Eggman's Egg Walker it is the cannon on the left side of the cockpit.

Using the Lock-On Missile works in a identical way to E-102 Gamma's main weapon in Sonic Adventure: By using a laser guiding system (by holding down the action button) the user can mark up to several nearby opponents and can then shoot several energy missiles at them in rapid succession which will automatically follow them until they hit. However, the mark from the laser beam only last for a short while, so if the player holds down the action button for too long, all marked targets will disappear and the player would have to start all over marking the enemies.

After the user obtains the upgrade called the Laser Blaster, the Lock-On Missile gains a larger attack radius by creating large explosions upon the energy missile's contact with the enemy, thus allowing it to damage more enemies at once. Obtaining this upgrade also changes the color of the user's energy missiles from the shared yellow color to blue for Tails' and green for Dr. Eggman.