Good suggestions by Nerdy. I would add a couple of points:
1) 44 is not that old for a detective. Also there are plenty of super fit folks in their 40s so if he's slow that may be because of the donuts rather than age.
2) Saying someone is calm but easily angered is a contradiction. Also I...
You already made this thread: Advice/Help - How can i fix my kid icarus oc and lots of people gave you advice there, yet you didn't respond to any of it.
I would suggest checking what advice people had for you there.
Good advice so far, especially @Idea 's ground up perspective.
Here are a few more questions you can use to flesh out your character:
What makes them the happiest?
What is their greatest fear?
What do they hate the most?
What do they value the most? (Abstract values like friendship...
Wow great work adding his bio in! :)
One thing I'd suggest is to not make him too distant from others or this will impair your ability to RP - RP at its core involves characters interacting with other characters. If he's too much of a loner, then he's not going to get much interaction...
So far he looks fine! I think it would be good if you gave some more thought to his personality and his backstory. At the moment he is more of a concept than a character.
Try to think about such things as:
Who created him and why?
Does he tend to be around other robots or humans?
What is his...