Intransitive verbs
Do all intransitive verbs require you to put it with a reflexive pronoun?
2 Answers
No. At least not if I understand your question.
Existir is I think entirely intransitive. I say this with some hesitation as it is an open invitation for someone to come up with some odd usage that I am not thinking of right now, but:
You cannot exist something.
Existo. I exist. I would not normally say "me existo", at least not simply to say I exist.
Eso ya no existe. That no longer exists. I would not normally say "eso ya no se existe".
It's possible but the constructions are not easy to understand.
The explanation given on this site sumarises it perfectly.