Make sure your characters are people by themselves before writing them.
So slight spoilers for Cornflakes but as an example I’ll use Spookus and Ginger.
Their dynamic is the typical optimistic happy one, and the more serious pessimistic one.
Thats a great END GOAL for when *creating the characters*
Now that you have your goal, how will you get there?
Well start with WHY the characters are the way they are.
Ginger has a troubled background, put down for his autism and is eccentric for himself sure, but he acts like that for the approval of others. Its a form of masking.
Wanting to move out of his enviroment he looked for roommates and found Spookus.
(Sorry for the spoiler lol)

Now that we know WHO he is and WHY he acts the way he does. Its time to turn those things, into more flaws/conflicts.
Ginger throughout the series, because of his eccentric attitude and his selfish need for approval (instead of getting it from himself) and his boundaries always pushed as a child, causes Ginger to forget what other peoples anatomy truly is. What he is doing is no where near as bad as his past, so in his mind he’s doing great, which he is for the most part.
But he still results, weather intentional or not, pushing other peoples boundaries.
And thats his character and his personal arc.

Now onto Spookus. He and many other characters come from where King Harrow brutally rules as immigrants w their parents. That orgin place already has a effect on a lot of characters. The way it effected Spookus is that he’s less jokey, headstrong, and super focused. Which results in him forgetting his own and other peoples emotions when things are heated.

So how do these two characters mingle?
Their first meeting point was through the need of a roof over their heads and became roommates.
Ginger gives Spookus the excitement and emotion he needs in life.
Spookus gives Ginger the groundedness and level-headedness Ginger needs in life.
But the characters personalities and strengths at this point should highlight where they can or even would clash.

Maybe Ginger gets pissed as Spookus for not taking him seriously or that Spookus can be more emotionally considerate.

Or maybe Spookus gets mad at Ginger for not thinking something through completely or just ignoring what Spookus suggests completely in favor for theatrics or just being the funny guy.

Now that we know who our characters are, why they act that way, now lastly, where are they going?
Your character dont need a big motivation at first, it can be just that “They just wanna get through life.”
Nearly any motivation is valid as long youre able to justify it.

Ginger don’t have goals cause he’s too focused on the now and how he’s perceived.

Spookus wants to eventually make a life for himself, maybe doing some protection or something bigger.

Idfk how to end todays talk, so I’ll just end it here.
Always make sure your characters are people that can stand by themselves that gives the reasoning for why they are where they are and why they are who they are.