I have many thinking voices (I have names for all of them). The five I most use are:
Soshon: This is for Ironic and logical thoughts (is devoid of morale). It is a vary sarcastic voice, but is also vary serious.
Pinpie: Named after Pinkie Pie due to similar "personality", used for crazy and happy thoughts. Sounds vary hyper and crazy.
Conscience: Self explanatory, used for morale and morally logical thoughts. Sounds exactly like I do.
Perd: Used for those thoughts you have that you find disgusting and make you want to vomit but are not sure why you thought of them in the first place. Sounds somewhat like Conscience.
Psycho: Also self explanatory, used for angry and violent thoughts. Sounds like the stereotypical serial killer.
Yeah, it is weird...