0 Space-Time
Considering entities that exist neither in space nor in time poses a fascinating theoretical possibility. Everything we currently know about our universe exists within the framework of spacetime. If spacetime is no more than a relational construct, then anything outside it—something without relation to another—must exist solely on its own.
The concept of "0 space" or "0 time" represents entities that exist exclusively within either time or space, but not both. For instance, black holes are regions where space has been condensed to a singularity, effectively reducing spatial dimensions to zero. Consequently, black holes exist purely within the dimension of time. Conversely, our sentience, which we experience as moments in time, could be seen as existing solely within space, devoid of temporal dimensions.