After the diving of the Guardian G-15, the Wright Isles were in danger and needed something fast.

All their terriory was being lost and just before Wright Airport was going to be destroyed, a new company came to the rescue.

The Cruiser C-21 was the first and only aircraft of its time made to counter the Guardian G-15 and resist the attack. This plane was also an interceptor. So, basically Cruiser tried to copy the Guardians aircraft and makes it better.

It was which was great. It had better turning rate but it lacked the 3 guns the Guardian G-15 had. Despite having 1 less gun than the Guardian G-15, it actually had a better fire rate.

The Cruiser C-21 had a 420 hp two bladed engine which was also installed in the G-15 but the engine that was mounted on the Cruiser C-15 was less powerful.