they started off az 1 character but now itz 2 i guess!!! i still consider imp 2 TECHNICALLY still be a version of aldrich but. there r some differencez aside from just "when i uze him az a sona i draw him like this lol" 1. imp iz a teen and aldrich iz old!!!! 2. different personalitiez. 3. aldrich actually haz a story and imp doeznt i jst go hehehehe silly :) and az for dezign differencez: 1. completely different outfitz. imp dressez like me irl coz well. xe ARE me!!!!! and aldrich dressez like a personafied verzion of the normal album 2. imp haz longer fluffier hair and aldrich doez not!! 3. aldrich haz bigger hornz n wingz lol 4. different glassez n face shape!