This is an example of how to summon a support unit for platformers. This is similar to how I made the drones in Old Taile Gamougg 4 and the shadows in Taile Gamougg: Noob.

Controls:

Arrow Keys to move the player; WASD to move the Support Unit.

Z to summon Support Unit; X to destroy it.

Press C for the Support Unit to fire bullets, press Spacebar for it to fire lasers.

If you're really smart, you can also use them as an elevator.

You can also replace these weapons with your own, or add other functions for non-combat purposes.