The Ultra-Adder is a Poison type Bow Weapon added in the Archery Tournament 2 Update.
- Extremely high Damage, able to defeat a Zombie Bull with Knight Cuirass equipped with 1 shot at maximum charge.
- The knockback can be used to escape dangerous situations.
- Nearly unlimited range.
- Projectiles hit enemies instantly at max charge, even at long range.
- Poison effect can take opponents out in case they survive the initial shot.
- Super Piercing can allow the user to get interesting collateral or multi-kills.
- Below average Agility for a Bow.
- Charging the arrow to the maximum takes some time, making for a slow fire rate.
- Knockback puts the user in a vulnerable situation, being unable to attack for a few seconds.
- It appears to be based on a cobra and takes part of its name from the common adder snake.
- It shares its "Super Piercing" skill with the Harpoon Launcher.