consider: june lets arcee sleep in the house after she finds out that her son’s motorcycle is actually a sentient robot warrior and she and jack build a giant pillow + blanket pile for her. but they do a bit too good of a job of it and arcee doesn’t ever want to be anywhere else
Or if she was starving during a scouting mission on Cybertron. Lots of corpses lying around, and when your options are chewing corpses or going hungry, you usually pick the corpses. Set on fire, first. Gotta cook your food before you eat it!
I’m not sure Cybertronians can cook their food, since energon is kinda explodey.
Probably just about every Cybertronian alive has had to drink energon taken from a corpse. It’s usually filtered and such, though, rather than being ripped straight from a corpse. Ratchet almost definitely has, old-aft practical mech that he is. Wheeljack probably knows how to make high-grade out of vein energon.
But Arcee?
Yeah, she’d probably straight-up eat someone. In a literal dumpster for shelter, most likely, she’d fit.
…now I’m picturing Soundwave somehow finding out and just blasting the lyrics to “Welcome To The Club” at full volume next time he encounters Arcee and the others. He’s a lil slag sometimes and wants to see what happens.