tulpa or alter?

[M00n_lyt3_999]

I'm fictionkin to Kallamar from Cult of the Lamb, and I feel very attached to this identity. I have been feeling high levels of desperation to return to my old body and see my siblings, which resulted in two sysmates based off of Heket and Shamura. However, I can't tell if they're alters or tulpas that formed subconsciously. Shamura meant to ask this yesterday, but they forgot. What do you guys think?

[Luminesce]

I mean, I don't differentiate between natures of headmates personally, aside from some disorderly systems who have headmates strongly tied to parts of the mind I guess

They should be as real as you, although that doesn't mean they're as developed as you yet - takes a little time and practice/experience for newer headmates to get quite as fleshed out in the brain, though not usually as long as it took the very first