I'm gonna focus more on Step 2! Timothy hehe.
By then, Timothy does speak often growing out of his non-verbal childhood. So MCs may start to learn about him more but all in all, he's still the same Timmy :D
Izzy (Izzy Atyra) is the one of MCs he would be looking for if he wasn't hanging out with Tam or Qiu at school. Like Izzy said, they do actually joke around! But when being a preteen, Timothy was really worried if he should lessen his rowdy energy around Izzy and hasn't expressed to her yet. He cares Izzy a lot as much as everyone else (and so he tries to mention Izzy whenever he talks to Baxter - "Oh man, I totally miss Izzy, don't you Baxxy? >:3c")
Dominic (PlayingDomioes) is part of Step 1! Timmy's 'da booois' friend group. So Timothy doesn't hesitate to be a rascal around Dominic. He acts like a damsel in distress, especially in step 2 when his small problems annoy Timothy, "Sir Knight, Qiu Lin is bullying me </3" He couldn't help but lightly poke fun on Dom but he also cares for him too.
Rovi (Zein) is one of the MCs he relates to a lot, both of them are worried if Golden Grove is the right choice for them. But he didn't want to drop all his anxieties to Rovi and only shares sentiment to one another. So when he feels homesick, sometimes, he goes to Rovi for emotional support and just share stories about their old homes. Otherwise, he still treats Rovi like a close friend (which is everyone else but he digress, he loves to gets to know with every MCs).
Mykae (cheapcoconutjam) is another friend he likes to chill a lot like Izzy except they formed 'Tamarack Fan Club' group to appreciate our angel princess Tamarack Baumann. Most of the time they're good friends who hang out with the other MCs to have some fun or chill together with Timothy being the yapper the most.
Now I can't fit every MCs here :,( so I decide to write special interactions ✨
MCs with Cranberry Hair/Eyes = Timothy sees them as his siblings right away. Step 1! Timothy acts like the youngest or middle child but Step 2! Timothy becomes like the eldest, he looks after your MC with care but doesn't hold back treating MC like his sibling (ruffles their hair or carrying them off the floor or possibly wrestle for some MCs)
MCs who plays instruments = Timothy offers to do some garage band performances despite being part of his own band already. If the instrument is not part of rock category, he would like to be invited to watch them perform! Otherwise, as long as he play his bass with other MCs who can play their own instruments, he's willing to perform together. (Just don't ask about his singing, he reaally gets shy).
MCs who likes to style their clothes or aims to be part of fashion industry = Timothy really hesitates to ask your MC for their advice, so he tried to act casual about it like "I don't really care about the colors I wear....but how do I look in this?" MCs' clothes would really catch his eye in the school's hallway and gets him distracted, he gets inspired by the style. Also, you *have* to ask Timothy to be a model. Qiu and Tam think Timothy's ego rises a lot whenever he's asked to model for photoshoots, and now for styling clothes? Timothy can't say no to that!