Recurring entities are very common for me. I've talked many, many times about my special hyperspace friend whom I call Teo. He is a consistent element on just about all of my trips, either appearing in my visual space or just a felt presence of him being close by. My growing interpretation of this being is that he is actually a future version of me, or maybe even this current me after I'm dead. He knows me too well to be anything other than me, he knows just what I need to see and experience on each journey as if he has already taken these journeys himself. That's really neither here nor there though, I just like to talk about this one a lot because he is the most mysterious and gentlest being (and most consistent) I've experienced on any of my voyages.
I've actually never encountered the machine type elves Terence used to describe, but I have encountered what I consider to be the normal type. If I could paint you a visual picture, the ones I've seen around about a foot tall and look just like the versions in children's Christmas stories, with pointy shoes, rosy cheeks, big smiles, and an air of mischief about them. In my experience, they are rascally; not because they are bad in any sense of the word just that they seem to enjoy mischief just for the sake of causing mischief. Read any old celtic story about the Fae folk or the Good People and they behave very similar to the beings I've met in hyperspace.
I've seen gnomes on one occasion, which differ only slightly in appearance from the elves and they do give off a distinctly different sort of vibe too, less mischievous and more focused on doing a task or tasks, at least in my experience. These gnome men (they were distinctly all male), in contrast to the elves I describe above, seem to exist in this reality somehow. They sort of come out of the woodwork sometimes, so to speak. The time I really remember encountering them was tripping with a friend one time, looking down at her body and seeing that her body was actually a gnome village, with all the little village people hammering and tinkering with her body like they were fixing up their town. This vision was sort of overlayed on top of normal reality, it wasn't like the elves which I only ever see while totally immersed in hyperspace.
Some other things I've encountered that I've heard other people talk about around here is the being known as Opticus, or a giant octopus looking thing that is all sorts of crazy. It didn't at all feel threatening, but looking at an octopus made out of glowing jewels that's about as large as our galaxy makes one pause in absolute disbelief. The only actual interaction I had with it was that it winked at me out of one of it's tentacles, sort of like a telepathic 'hello, yes I see you there, welcome!' kind of acknowledgement. That thing wasn't as chatty with me as it was with the original poster who wrote about that entity, but I knew exactly the being he was talking about when he made that thread.
Never met a jester, and from the sounds of how they behave sometimes I'm quite glad. I enjoy a good prank as much as the next guy, however when I trip I like to move past the elves and fairies and all that jazz and get right into the deepest and furthest level I can go. In my experience the deeper one goes into hyperspace is the more the beings take on a more god-like or angelic quality, and I learn much from those beings. On the contrary, the elves and mini-devas are more concerned with their own agenda then with actually helping me in any sort of spiritual way. It's fun to pay them a little attention now and again, but once you get into the spiritual side of it that's where you end up wanting to be, at least in my experience.