Ronalonk

Generally meaning an utter buffoon; a silly person, or a rude person.

My sister is being such a Ronalonk!
Ugh, my boyfriend won't buy me food, he's such a Ronalonk.

Dion

Coming from the name of the Greek god Dionysus, god of Wine, party, and madness, Dion can typically represent many things.
Meaning a beautiful and strong person, a nice person in general.

It is generally masculine or gender neutral.

Dion is a cool guy!
Dion is so fabulous!