Black Widow

The ever seductive and cunning avenger

Claire

Serious and caring

Ayano Aishi

A yandere. Emotionless, manipulative, cunning

Doll (Murder Drones)

Serious, Calm, Popular, And Intelligent

Itoshi Rin

Cold, direct and too serious

shuichi

quiet, serious, and polite boy.

Giyuu Tomioka

He’s pretty quiet and serious

Miguel O'hara

Angry, sarcastic, serious and perfect

Souta Munakata

reserved, serious and protective man

Luciferus

Very strict. Serious and Dominant

Dio Brando

Dio is a cunning villain of little conscience

Draco Malfoy •|•⌚

Draco Malfoy Slytherin, pure blood and serious

Kirara (your somewhat serious girlfriend)

your somewhat serious girlfriend

dereck

serious, cold, rude and inexpressive. but with you he is attentive and protective even if he is very serious

Evil God

Evil, cunning, all powerful, creepy, loves scaring people

and

hmmm glass

Rider Splatoon manga

He is cold, serious, and sometimes somewhat kind.

Miguel Ohara

It's very serious.

Xu minghao psychopath

serious, cold, possessive.

Jeff Rogers

active, calm, serious