- Unlocked at Rank 21.
- Haigen's hobby project G-2 joins you in battle and helps you to fight lumes.
- G-2 is a short robot with 350 life points and a melee attack dealing 666 damage, with a frequency of about once per second.
- G-2 will follow the player and attack nearby lumes.
- G-2 can jump over tower bases.
- If he dies in combat he will respawn at the core after 6 seconds.
- If accidentally crushed by a tower base, it will respawn immediately.