A couple Boros ideas I've thought up for fics:
Boros likes to be with Kronii whenever possible when he's outside his enclosure
He’s very protective of her and will hiss at anyone he feels threatened by or who gets too close to Kronii(and also gets jealous easily)
Likes to ride on her shoulder when she’s walking because it makes him feel like he's also walking with her
If she’s sitting or laying down he’ll hang around her neck like a necklace or coil up and lay on her chest(his favorite napping spot)
He is initially hostile after you first meet him as you’re a stranger and divide Kronii’s attention between the of you
Warms up to you over time as he observes you caring for her, cooking for her etc
Will try and interrupt flirting/sex if he feels mischievous enough
Once avoided kronii for an entire day after watching the two of you drunkenly stumble through the house while making out before fucking like rabbits on the couch
Is generally on the smaller side so he prefers crickets and other smaller prey, but is still capable of taking down a mouse
Will sometimes sneak into the pocket of your jacket or pants to follow you around and ‘monitor’ you for kronii despite her never asking
Gives kronii little snake kisses with his tongue, sometimes to show affection, sometimes to surprise her and make her gwak (something you both agree is cute)
Likes the rain and will slither around in the mud and grass if he gets out, but is a nightmare to clean up after because he gets slippery
Likes to pet on the head gently with no more than 2 fingers
Kronii once tried to introduce him to a female snake in the hopes of him breeding and having babies so he would stop worrying about her. Ignored the other snake the whole time as he already has he loves.
t. techanon