Angstman 

A superhero usually displaying constant angry like behaviour to fight crime.

'Arrrnnnghhh I am angstman!' and/or similar.

Angstman by brotherdaniel August 4, 2007

angstrant

A combination of angst and rant. A spontaneous outpouring of emotionally-charged sentiment.

Most commonly found in a blog posting or email.

Heather lamented the futility of life in her latest angstrant.

angstrant by Casey Muratori April 1, 2005

Angsuman 

Everlasting as the Sun. Sweet and charming.

Loves everyone and cares about people.
Full of hope and happiness

Angsuman is a brilliant boy

Angsuman by anonymous January 18, 2022