"What exactly is that thing?" Luna asked.
"My home, and what you should strive to obtain," the visitor said?
"Literally or metaphorically?" one of the guards blurted out.
"Neither."
"Huh?"
"What do you mean?" Luna asked. "Is this a form of riddle?"
The visitor shook his head. "No. This is no two-way solution many things get boiled down to. That is what you should strive for technologically." His tentacles twitched erratically. "With what I've seen of these timelines so far, your technological distribution is a mess." He looked around and huffed. "I have seen trains and wagons. I have seen computers -albeit primitive ones- and hoof pumps. It has no rhyme or reason."
Celestia stomped forward and stood tall in front of the weary visitor who did not bat an eye in her imposing presence. "Up until now you have appeared out of nowhere, with THAT thing in my skies." she pointed to the saucer. "A thing that engulfs the size of Canterlot city itself. You've threatened us and insulted us, and you expect us to believe that you're willing to help?"
"Whether you believe it or not is not really for you to decide. I'll be helping you progress beyond the sky and into the black void of space," the visitor said with hoof outstretched. He looked to the two princesses, and a brief smirk tarnished his perpetual scowl. "And you will hopefully attain the heights you had in my own timeline. I've only seen that occur fivce, and one didn't end well." He rubbed his chin and looked away.
"You okay there?" the second robot asked the traveler. "You thinking of that again?" The traveler nodded as a response. "There there," the robot comforted. "No need to think of that. It won't happen here. It only happened once, after all."
"What's he talking about?" Luna asked.
The robot turned to face her, his face prideful yet smiling. This one was drastically different from the angry mare. His mouth was a set of four mandibles covering a small beak, similar to that of a praying mantis. His four legs ended in sharp blades opposite each other with a massive gap between. It gave the impression that the pony was walking on a bizarrely fabricated pair of elevator shoes, although the elevators were extremely thin and horizontal to the body rather than vertical. His eyes were numbered just two, but the pupils were much different. They were an assortment of diamond shapes that moved independently of each other. Luna would twitch and try to look away whenever one of them would move, not to mention the indiscreet way she would shiver. The pony's mane was like a 'regular' pony's, but the tail ended in a segmented spear-like form with the ability to stretch out far beyond its proper reach, as attested to the pony booping Luna's crown with the end without needing to move around.
"It's not something that concerns you right now."
"So it will concern us eventually," Luna concluded with a frown.
"Ehhhh..." the pony twisted his hoof left-to-right.
"I see."
"I would also like to apologize if you're disturbed by my appearance. My kind had evolved from apex predators, so we were primarily carnivorous."
"No harm done," Luna said. She pushed the stallion to the side and looked the visitor straight in the eyes. "My sister is correct. We have way of trusting you. This is becoming a circle of discussion, honestly."
"Then if I showed your current greatest minds the scientific knowledge I possess, would you prefer leniency over expediency?"
Celestia stepped forth and nodded. "I believe I can arrange for our best magicians to come here."
The traveler raised a hoof to protest, then came to a realization and lowered it almost as quickly. "That's true. Your magicians and wizards tend to double as scientists of various fields." He hummed with thought before resuming his conversation. "Fine. I agree to this, but I also want Twilight Sparkle here. I assume the Element of Magic, your student, is still in her tree library with that tiny reptile, yes?"
Celestia was baffled. She didn't know if she was more upset about how this stranger who came from nowhere knew Twilight Sparkle or that his information was so out-of-date. "She is no longer and Element of Harmony?"
"She was deposed?!" the metal mare shouted excitedly.
The metal stallion grabbed her and pushed her away.
"No..." Luna interjected while watching the angry robomare thrash at her fellow 'machine'. "She is the Alicorn of Friendship, and...well. If you withhold information from us," Luna stated with a snobbish tone.
All five eyes of the visitor narrowed. "She is an alicorn now?" he repeated. "But she never became one nor its equivalent in any of the timelines I have gone to." He tapped his lower chin multiple times. "There's a disturbance within this temporal tangent, making it not a redundancy tangent but possibly it's own universe..." he mumbled.
"What are you talking about?" Celestia asked.
"Something that I will teach you in the future when you come to understand basic laws of physics, then quantum mechanics, and then the laws of reality, which are imperative in understanding time travel and dimensional breaking."
The robot stallion tapped the visitor's shoulder and mumbled something in his 'ear'. He nodded and waved him off.
"I forgot. When can you organize this reunion?"
"If messages go out right now, in about three weeks. I would need to send out the invitations, receive the responses from those wanting to come and those refusing, and then preparing everything for the reception and well-being of everypony there."
"Uh-huh. Then I'll return to my home and wait for that long a time."
Luna teleported in front of him, blocking him with her body and an outstretched hoof. "I prefer that you remain here in the castle with your mac--Where'd they go?"
The lunar princess hadn't even blinked that the group of would-be saviors of ponies had vanished instantly. There was no trace of them, and the nearby guards were looking around to see where they had gone, yet nopony could see them.
"What was that?" Celestia wondered. She just stared at where the ponies had been with wide eyes. "He can use magic?"
"Maybe?" Luna answered. "None of those four had a unicorn horn."
"But they weren't anything like ponies we had seen before," Celestia stated. "He didn't fully specify his provenance or who they were, and I don't know if those metal ponies of his are to be trusted."
Luna frowned at the corner of her mouth. "I understand. That pony with the sharp hooves said that his kind evolved from apex predators." She gave a single laugh in response. "He expects me to believe pony kind was an apex predator?"
"I think that--"
"Here," a familiar voice said.
The two alicorns flew high into the after screaming in terror. The weary traveler was there again.
"How are you doing that?!" Luna yelled. "What is that in your...tentacles?"
"A vial of my blood. Give this to your scientists before I arrive and ask them to test it and determine what species it comes from. The dna will be identical."
Celestia took it in her magic and looked at it with great suspicion. "Thank you, I think." She looked back to the visitor. "You know, you didn't actually introduce yourselves."
"And how did you just vanish...like...that." Luna's ears drooped in annoyance. "He did it again."
"Let's just do this thing he asks, but with some insurance," Celestia said. "We don't want this to be a trap of some kind."
"Agreed," Luna said. "Although..." she stared at the saucer in the sky. "I'm very curious about what kind of spell they used to vanish like that."
In the saucer, the weary traveler casually walked out of a room, leaving the doors to automatically close behind him. The robostallion laughed. "I bet they're thinking that the teleportation tech was a spell of some sorts."
"Because sufficiently advanced technology looks like magic to those only knowledgeable of more primitive tech," the traveler explained.