Like i'll try to describe how they interact

Kibble and Nitro.

They're closely related, but not as brothers. They're purely friends but there are times when Nitro does something stupid which makes Kibble go "I don't know that guy".

What about Cyan and Berapi?

They're close friends, along with Bloop. Cyan would sometimes ask Berapi the meaning of life just to annoy him.

Omega and Nova.

Bob & Boopkins. Just Bob & Boopkins.

Nova and Bloop?

Tubbo & Tommy. Just Tubbo & Tommy.

Oh.

I mean that's their whole dynamic.

Bloo kinda has a symbiotic relationship with Ollie.

The orbitorb

No I need you to list down at least 2 (Also it's Optiorb)

But you said one of my ocs so the optiorb and bloop

(Oh) They barely get along with anything except causing chaos.

Cyan
Omega

They're basically cool with each other, although the latter would sometimes use him as a bomb to threaten someone.

Omega and kibble

Kibble would sometimes attempt to slap him in the face for supplying Nitro with his drugs (yes that is canon) which (Almost) always ends up with him getting slapped.

Frick it, omega and the rest

Berapi: Would ask for his help in constructing super-weapons (Berapi doesn't really give a fuçk so he's fine with it)

Nova: Bob & Boopkins. Just Bob & Boopkins.

Pat: Pat still hates him for that one time he tried to shoot a Waddle dee, but tries to hide it. Omega would sometimes bring that up in conversations just to piss him off.

Volt: Omega has heard of him but never really interacted with him.