Between 4 BBY and 3 BBY, the Spectres undertook a heist against the Galactic Empire to steal something from an Imperial base. In order to escape, they commandeered All Terrain Defense Pods and battled against Imperial forces, which included TIE fighters, fighter tanks, and turrets.
The Spectres' heist appears in the 2017 browser game Star Wars Rebels: Imperial Heist. Although the default player for the game is Ezra Bridger piloting an All Terrain Defense Pod, if the player fails after traveling a certain distance, the game allows customization for the character and All-terrain vehicle. The player can unlock an All Terrain Missile Platform, All Terrain Armored Transport, and All Terrain Personal Transport. However since these can only be unlocked after losing the game, and the opening cutscene only depicts the Spectres planning to take AT-DPs, this article treats the AT-DPs as canonical, and the rest as gameplay mechanics.
The Spectres' heist appears in the 2017 browser game Star Wars Rebels: Imperial Heist. Although the default player for the game is Ezra Bridger piloting an All Terrain Defense Pod, if the player fails after traveling a certain distance, the game allows customization for the character and All-terrain vehicle. The player can unlock an All Terrain Missile Platform, All Terrain Armored Transport, and All Terrain Personal Transport. However since these can only be unlocked after losing the game, and the opening cutscene only depicts the Spectres planning to take AT-DPs, this article treats the AT-DPs as canonical, and the rest as gameplay mechanics.