Uhhh what about Tune for either your Chillypuff or Cullsiren?
Tune is a young medical student who is very shy and deals with a lot of self doubt. She’s kind and does her best to help others and works very hard for her studies, (in fact she’s so devoted to the point she gave up her beloved glass harmonica, she sometimes misses it but medics are usually too busy for music). She’s often seen with a small school of small medical drones following her everywhere as well.
Despite her shyness and lack of confidence, when a situation is dire she goes full doctor mode. She might be panicking on the inside but she keeps herself calm and collected as she helps in any way she can.
Her alt mode is a beluga and she has a ‘twin’ brother named Menace, who is a bottlenose dolphin and lives up to his name. Tune worries about him all the time 💀
Chillypuff would really like Tune ngl. She’s just a lil beluga trying to do her best, and shes doing a great job! Shed be very encouraging with her work, helping out in any way she could (though she’s no medic, so don’t expect her to give her advice related to that). She’d be equally encouraging though for Tune to take a break and relax, and not stress her poor head out! That would mess with her when she has to focus, and that’s no good! If she learned about her glass harmonica, she might give her another one as a gift… “it’s okay to reward yourself every now and then!”
Depending on how chaotic Menace is, she’d either like him or not. Chilly herself can also be a playful little seal, so I can imagine them getting up to antics if they click XD
Cullsiren would be very similar to Chillypuff as a mom friend, but while she’d encourage a break or two every once in a while, she also relates to the hard labor of medical work. Tune would hear her complain about long hours and difficult patients in a singsong voice, which says a lot being the chief medical officer for a ship full of rowdy Decepticons!
Cullsiren would find Tune’s medical drones the cutest, and she’d offer to compare them with Mantabrest to see if their softwares are up to date. If Tune allowed it, Cullsiren could help with some procedures or give her tips and info about certain things, to make her life a little bit easier. If Tune knows a thing or two about anything Cull doesn’t, I could see her also helping her out too! They’d be good medic friends who could help each other out ^^
Cullsiren probably wouldn’t like menace though. She doesn’t have the patience lol