The G-Meister
Giga Slime
I thought this would be fun, and also a great easter-egg (or chicken egg...). If you could take chickens through exits you could carry one around on your journey with you, eg. through an arcade run, or something to keep you company during your relentless grinding. If you happen to use a phaseplate when one is nearby it phases along with you. Maybe if you talk to an NPC with the chicken near, they all say different things, such as "Is that your pet?" or "Get that blasted thing out of my shop!"