Aurora is a rare knife that was originally obtainable by purchasing the 20th tier in the Main Event during the 2019 Christmas Event. It is now only obtainable through trading as the event has since ended.

Bat is a godly knife that was originally obtainable by purchasing the 20th tier in the Zombies Rewards for 50,000 Candies during the 2022 Halloween Event. It is now only obtainable through trading as the event has since ended.

Batwing is an ancient knife that was originally obtainable by purchasing the Batwing Gamepass for 2,499 Robux during the 2018 Halloween Event. It is now only obtainable through trading as the gamepass has since went offsale.

Bioblade is a godly knife that was originally obtainable by purchasing the Bioblade Gamepass for 1,699 Robux. It is now only obtainable through trading as the gamepass has since went offsale.

Blue Elite is a legendary knife that was originally obtainable by purchasing the Elite Gamepass during the 2017 Christmas Event in order to promote and convince players to buy it. It is now only obtainable through trading as the event has since ended.

Blue Seer is a godly knife that is obtainable by crafting the Random Painted Seers recipe in the crafting station or through trading.