like, okay, I see your “Donut likes Locus and flusters him regularly” and raise you…
A Donut who sees Locus’s crush on/obsession with Wash a mile away, and sees that it makes Wash uncomfortable, and immediately makes it his mission in life to make sure that Locus never gets Wash alone.
Locus will just be creeping on Wash while Wash works out and then BAM. Donut drops from the ceiling.
Cryptic convos? Instant Donut physically slamming himself between the two of them talking to Wash in a loud voice about how Sarge needs him now.
“Wash, okay, here’s the doll. now I want you to point to where the creepy merc touched you.”
“… what, like when we were fighting?”
“Okay I think we’re safe, put down the shotgun Sarge”