Sillies!
They are the same age in my hcs, sad guy is just short
I feel like they are like young adults or something idk

Yeah I changed how they looked hehe
I tried to make happy fella look more chubby this time but he's still taller

I'm not really sure abt this but I hc them as being actors in a kids show, instead of being characters in a cartoon
That show being the adventures of two trying to find happy things in the world every day
So both sad guy and happy fella are real people
Off stage they basically act the same as the character they play

Idk about their names, but both of them call each other by the nicknames they made (because I feel like "happy fella" and "sad guy" sounds a bit weird and i dont really want them to call each other that)
Happy fella being Mr. Sun and sad guy being Mr. Moon
Those nicknames are also used by the kids who watch the show

Happy fella is also called sunshine/sunny which causes him to have the habit of describing emotions as different types of weather (Ex: "rainy" being sad and "stormy" being angry yk)
Sad guy is also called raincloud because of his gloomy mood
But sometimes he's called cloud when he isn't in such a sad mood
Sad guy and happy fella use those nicknames as pet names for each other or something

Sad guy (probably bcs idk yet) has ptsd and is still recovering from what he experienced in the past
happy fella is helping him do that