Me under the effects of the smooze:  
Extremely violent.  
Murderous.  
Insane.  
Chest is shrouded in pure darkness.  
Constantly followed by a sinister shadow (The darkness in my heart.)  
All who touch said shadow are pulled into a shadowy hellscape from which there is no escape.  
No longer recognize my friends.  
Sometimes, my closest friends can get through to the real me, but this is EXTREMELY rare, so only try it if all else fails.  
Aversion to all things light, as well as anything brightly colored.  
If I hit you with a magic attack, a dark purple X will appear on you, making all consecutive attacks that I land hurt even MORE. (A reference to Hyrule Warriors: Definitive Edition’s Darkness Elemental Effects.)  
With enough consecutive attacks landed in a row, dark chains will appear and bind you to the very spot you’re in, even in midair.