Well, there are quite a bunch that you could ask anything~ (All of these are my actual characters, just to let you know.)
This 'Ask Me' includes the following:
Liverpool (Aaron Kirkland) - Human / Hetalia OC
Weinbach (Adaliz Vroman) - Human / Hetalia OC
2P!Weinbach (Ava Vroman) - Human / 2P!Hetalia OC
Wolfie - Human / Persona
Pisa (Severina Rossi) - Human / Hetalia OC
2P!Wolfie / 2P!Angel - Human / 2P!Persona
2P!Weineko - Cat / 2P!Nekotalia OC
If you are allergic to any of the following, Admin is not responsible for any injury.
Also, I may/may not add a few others; I may/may not put a few drawings of the questions onto DeviantART, giving you an idea of what the character looks like/behaves.