Wyvern has a bulky physique which he softens by wearing cute and dainty clothes in pastel hues. He's a performer (drag queen) by profession but his day to day attire is still feminine and androgynous, yet a look distinct from any of his numerous stage personas. He doesn't consider himself a crossdresser and if you imply that he'll crush your toes with his stiletto heels.

Flighty in personality, he enjoys putting on a show. He believes that by putting on a mask one can express their truest self to the fullest. Whether something he does or says is because of a character he's playing or because it's something he truly believes is ambiguous and therefore frees him of responsibility. Actions having consequences is an alien concept to him which is why when attempting to discuss serious matters in a relationship he tries to avoid facing the problem with so much effort that might be better put in fixing them.

In short, he's a self-serving jerk.