Captain and Optimus in Camelot

[The Vision]

Optimus was doing okay. He was used to being hated or blamed for whatever crime he did not commit. Megatron had made sure of that. But one thing was very alien to him.

Psychic communication.

Most psychics cannot actually manipulate a Transformer in any way. They are, after all, machine, and their minds are actually extremely intricate computer codes. However, in the Omniverse, Optimus had not only shrunk to half his height, but he was now susceptible to things he was once immune to. As was the case when Professor X invited his guests inside.

"Who's there?!" Optimus bellowed. He transformed his arm into a cannon again and waved it around, trying to find the mysterious speaker. The people around him gasped and screamed, running for their lives. The guards nearby immediately raised what looked like extremely primitive guns that still operated on string fuses. They couldn't do any real damage.

Fun fact: Since he got weakened when he arrived in the Omniverse, now he actually can be hurt by things like musket balls.

"Optimus!" Captain hissed through his teeth. He stuck his left hand out to comfort the robot, and the other subtly reached for his shield. "Optimus. Calm down."

"There is a voice... In my head..."

"I can explain it," Captain Rogers whispered, "It's not hostile. Just... Just put away the cannon, son."

Optimus scowled and scanned his environment. As Rogers had said, there seemed to be no hostile forces besides the retaliatory reaction of the guards. Optimus turned his cannon back into a hand and bowed his head.

"My apologies," Optimus said, "I overreacted, the captain tells me. Please... lower your weapons."

The guards immediately snapped back into a neutral stance and continued marching down the hallway of the palace.

"That was... easy," Optimus muttered to Cap, "Now what was that voice?"

"It's Professor X," Captain Rogers said, "He's psychic."

"Which means...?"

"Well, he can do a number of things. Read minds, send mental messages, even control minds if he needs to," Captain Rogers explained, "But there's no need to worry. He's a good man. He's from my world, actually."

"Is that so?" Optimus mused.

"Yes. The Avengers, that team I told you about, has a pretty close relationship with his team, the X-Men. Hopefully, this Xavier will recognize me, too."

"Yes," the voice rang in their minds again, "I do, Captain Rogers."

Optimus instinctively reached for his ion blaster, but one look from Cap informed him that the voice was to be trusted. The soldiers swung another set of doors. The hallway was just high enough to fit Optimus' head, but he couldn't help feel wary about scraping his antennae on the roof. But now, for the door, Optimus had to stoop to fit inside.

Refreshingly, the room they walked inside was much larger. Optimus could stand to his full height without having to worry about the roof. However, the floor was much more fragile than anywhere else, and each footstep left a small crater. The wide room housed one human, sitting on a chair with wheels. Captain Rogers approached the man in the center of the room, smiling.

"So this is where you've been cooped up, old sport," Captain Rogers called out.

"Yes, Captain," the man replied in a mocking tone, "And I took care not to develop Jay Gatsby's speech habits."

The man grabbed the wheels on his chair and pulled them in a way that he could face the giant robot. He was wearing a... well, the Google called it a "suit". He had no hair, unlike most of the humans that Optimus had met.

"You will forgive me for not standing, Optimus Prime, but my legs are not what they used to be. My name is Professor Charles Xavier. It is a pleasure to meet you."

"The pleasure is mine," Optimus replied, "I do apologize about the floor."

"Oh, please. Don't worry about that. We have people who can fix that in seconds," Xavier said, "I gather you've met the X-Men of the Omniverse. Or, perhaps I should specify, one version of the X-Men."

"Well, one X-Man," Captain Rogers said, "Very different from the Cyclops I know."

"Yes, not quite the inspiring leader, I've noticed," Professor X mused.

Captain smiled. "I was talking more about the lack of eye lasers."

"Ah, yes," Professor X chuckled, "His optic blasts. I'm almost grateful that this world's Scott Summers is not that kind of mutant. The technology to fashion a suitable visor is not available in my new home. Perhaps elsewhere, but not here. Now. How may I help you gentlemen?"

Rogers shrugged. "We have... many questions, Professor, and-"

"Ah, yes, I imagine so. Scott tells me that you both are new to the Omniverse. Interesting pairing, I might note."

Professor X sighed and gazed at the pair's faces.

"Two leaders of a mighty army fighting for justice. Strong fighters, stronger peacemakers still. Cast into a world that is not their own by a great tragedy, and yet, continue fighting for what they stand for. And an alarming affection for the color blue."

The professor leaned back in his chair and smiled.

"Captain America and Optimus Prime. Come, walk with me. I will answer your questions in the garden. Perhaps you would be more comfortable in the great outdoors, Optimus."

With that, Professor Xavier pleasantly rolled his wheelchair across the room. Two guards opened the door for him, and waited for the pair to follow suit. Optimus grinned at his partner.

"I see why you like him," the robot said.