Airplane

An airplane is a flying vehicle featured throughout the Sly Cooper series. The earliest known member of the Cooper Clan to have used one was Otto van Cooper. Bentley later used Otto's blueprints from the Thievius Raccoonus to build one for Sly Cooper to use during the ACES competition.

Warplanes
Warplanes were found in "A Tangled Web" of Sly 2: Band of Thieves. They flew around Prague and occasionally would drop bombs, which could both injure Sly and the guards, as their allegiance was to Neyla, rather than the main boss of the level, the Contessa.

Neyla's plane
Neyla had a small plane that she used in "He Who Tames the Iron Horse" of Sly 2. She used it to attack Bentley's RC chopper above the third Iron Horse train. It had the ability to shoot bullets and fire missiles. Bentley damaged the biplane, causing it to spiral out of control and crash somewhere in the woods.

Biplane
A biplane is a type of airplane mainly used from the 1900s to the 1930s, identifiable by the two pairs of wings. They were mainly used in Sly 3: Honor Among Thieves as competition planes. You can also see Otto van Cooper's biplane in the inner sanctum of the Cooper Vault.

By inputting a cheat code, the player can unlock the Toonami plane, which has a different skin and can fire unlimited missiles.
 * Toonami plane