Can someone explain to me why do the anime characters look older or younger than they look? Mostly, why do the female characters be 15 years of age, but has the body of a grown woman?

Just thought it was interesting to compare some characters, especially when overwatch is pretty "anime" sometimes:

Bakugou/Junkrat: Sadistic explosive, yellow hair, uses bombs

Itachi and Genji: Japanese shuriken throwing vengeful ninja with sword from powerful Japanese clan.

Tracer and Rebecca: uses duel pistols, and speeding up and reversing time is their ability

Roadhog/Mako: Gluttonous, fights by hooking enemies with chain, throws scrap metal form range, shows off belly.

Sombra and Major Kusanagi: anti-government hackers with invisibility and machine guns and purple color scheme.

Escanor and Reinhart: prideful and huge with armor and axe/hammer and lion design, can shoot fire from weapon

Nelliel and Orisa: Strong and supportive centaurs who throw lances and absorb attacks and shoot energy

Kumoko and Moira: Evil sorceress who absorbs enemy lifeforce and shoots dark magic at enemies and has healing powers too.

Hope you all like it

Any and all constructive criticism is gladly welcomed by me

I just wanna see, btw i mean iconic not the one you like the most