He loves being ordered around by Starscream.
Swap was originally created to be Megatron's Minicon, but Starscream messed it up and Swap became bonded to Starscream.
Swap loves feeling submissive to his lord and master. Always calling him Lord Starscream instead of Commander Starscream.
Swap has the power to switch aspects of another Cybertronian with his lord. He can also create a power surge more powerful then a Prime, and he gives this power to his lord and master: Starscream.