First of all, I've been thinking, and you'll see where I'm going with this in a minute... I see Sneo as biomechanical, with the metal parts of the NEO body being a part of him, and not armor that he can take off - but I have come up with and more or less incorporated a naked design for him after initially making it just for fun. Then I started to think about the scenarios in my head. If both the darkworld and the lightworld exist and people cam travel between them, ways for the worlds' matter to interact must be really interesting. Additionally, darkners and lightners can directly communicate. It is possible then that Spamton could ask Mettaton to alter the NEO body through his art program so that it better suits him, since NEO was never meant for him and so had physical drawbacks even after getting the strings cut. This would be a great way to explain him getting better from some of the disabilities brought on by being in NEO. But it would have to be systemic. Mettaton can't update the file then just magically have it be different. Unfortunately for Spamton, he would have to leave the NEO body in the dark world with Swatch for it to be updated after having Mettaton edit the file in the light world. Maybe then my Sneo couldn't remove anything before, but after the update he is able to take the heavier metal parts off like armor to facilitate some comfort. Additionally, I see Spamton as transmasc, but draw him dualsex because it's fun. But in the scenario I just described, maybe it was the NEO update that gave him a dick. I want to explore that idea even further eventually, but for now, onto the actual ask...

Mettaton would already have a decent idea what to expect from Sneo, since he and Spamton worked on updating NEO together - but seeing it in person is different. They both get hit and heavy with each-other to rile Tenna up, planning also to double team him with their attention. But Spamton gets a little too excited, what with the new organ (alrhough this would certainly not the first time he's used it, it's still new) and the involvement with the person who literallly created his God bod and who is hot af as well (Mettaton has his EX body here). So Sneo winds up cumming super prematurely. Mettaton, albeit surprised, gets an ego boost from it. Tenna, meanwhile, gets a little bent out of shape about how Mettaton made Spamton cum way faster than he's ever been able to. Seeing Spamton so sensitive and stimulated and flushed underneath Mettaton gives him the furious boner of instant competitiveness, so he dives in to (respectfully) overstim Spamton alongside Mettaton. However, it doesn't last long before Spamton and Mettaton turn on him. They shower him with praise and attention until he lets go of wanting to be in control and begs for more love. Spamton speedruns his refractory period while watching Tenna and Mettaton get it on, then he joins in. He still only wants Tenna to have access to his pussy, but Mettaton is more than welcome to play with his dick (he earned it, afterall, he helped bring it to life!). But as foolhardy as Spamton is, even he knows he wouldn't be able to tank the stimulation from both parts, especially if Tenna kept up with the worship like he adores. So he has Mettaton keep Tenna still while he plays with him a bit, facefucking him eagerly while Mettaton jerks Tenna off for taking it so well. But before Tenna can bust, Spamton stops Mettaton. This makes Tenna whine because he HATES being edged. As nice as his mouth is, Spamton wants to be the one to make Tenna cum, and his pussy just so happens to be feeling lonely so now it's time to get to the good stuff. He always tries to ride Tenna into oblivion but it never goes that way because something about the vulnerability about using his pussy turns him to goop and he can't keep up the pace with all the pleasure making him shake. It's normally here that Tenna would take the reins. This time, however, as Spamton starts to falter, Mettaton gets behind him to help guide his movement, causing both him and Tenna to howl. But Spamton isn'nt confortable with being held onto from behind like that... Mettaton switches to his front instead, which gives Tenna an incredible view. I'm going to leave whatever Mettaton's got going on for him to your imagination this time - just know that Tenna is eagerly indulging in it. Now all three of them are on a mission to make each-other cum. Mettaton is making Spamton ride Tenna, Tenna is pleasuring Mettaton with his mouth while also reaching foward to jerk Spamton off, Mettaton is jerking Spamton off too, and Spamton and Mettaton are making out crazy style.

This is it for them! But I think it would be more fun to ask you guys who you think / would like to see cum first. Use your dirty imaginations and please share with the class! >:)