Colin:

19 at the start of the show, 23 at the end

He's the shortest adult character

He's gay

He is extremely scared of fire and doesn't use it whenever he's inventing things

He is Jake's rival in some ways

He is an omnivert (Introverted sometimes, extroverted at others)

He is studying to get a doctor's degree

Now for the antagonists, starting with the ravager:

He is surrounded in psychic energy

He died in 1931

He is aro-ace

His real name is Mark

He keeps his heart close to him in a small compartment in his suit pocket

He is extremely egoistical

He is aithiest

And that's all for now, gn