When the Commander is deployed, you will get the crafting materials for the Drone in a certain chance after the stage is cleared.

 Ex.) Gear, Screw, Schematic, Drone Hack

 ※ Materials above may change after the release of the game.

 As the stage goes higher, number and obtaining chance of crafting material for the Drone will be increased and

 If you deploy the search mission to the Drone, it will bring the Herostone after a certain time.

For the chance of the Drone being crafted, please refer to the announcement of chances after the game release.