I came across this shirt awhile ago
https://scontent-ort2-1.xx.fbcdn.net...f0&oe=5A551C40
and while I don't remember if it's an official product or not I thought it was interesting but I can't recognize everyone so maybe you can assist?
1st row = Goldar, Divatox, Psycho Blue, Koragg, Psycho Red
2nd row = ?, Lord Zedd, ?, Dai Shi, my guess is probably Scorpina
3rd row = Snide, Lothor, Rito, ?, Ransik
4th row = Gruumm, ?, ?, Snide, Puttty
5th row = Diabolico, A-Squad, ?, Mesogog, ?
6th row = Ecliptor, Astronema, my best guess is Thrax, wasn't sure here but someone thought Trakeena, Jindrax
7th and final row = King Mondo, ?, Rita
read it left-to-right and ? notes that I'm not sure who the design represents.