In the morning, Caitlin began by taking samples of Elon's urine and stool for examination. Elon, meanwhile, lay on the hospital bed, tablet in hand, eagerly absorbing knowledge. Just a moment ago, he had requested from Cisco a series of educational materials ranging from basic to advanced on topics such as space, black holes, human anatomy, and electricity. Cisco was, of course, astonished at how quickly Elon had mastered English.

Elon knew he couldn't place all his hopes on Professor Wells or the vibrational energies alone; he also needed to learn about spatial dimensions to increase his chances of returning home.

"Hey, Power Outage, put down the tablet; time to scan your brain," Cisco called out cheerfully. Cisco was the kind of guy who made friends easily. Just a moment ago, he had bombarded Elon with endless questions about Earth, and despite Elon's 'you're so annoying' attitude, they had become friends.

"What? Power Outage? Me?" Elon pointed at himself, incredulous that in this world his nickname would be 'Power Outage,' as if he were some sort of rival to The Flash, cutting off his electricity...

"No, no, no, Cisco, I refuse to accept that bizarre moniker," Elon protested.

Unwilling to give up, Cisco, who had pondered over the name all night, suggested another, "How about Lightning Bolt...?"

Elon gave Cisco a 'you've got to be kidding me' look.

Cisco, treading cautiously, offered, "Spark?"

"OK, that'll do," Elon conceded. He wasn't worried about stealing Barry's title of The Flash since he had no intentions of playing the hero.

Satisfied, Cisco beamed, "Great, Spark it is! It's so exciting; I can't believe I'm friends with someone from another world. This is amazing."

"I feel the same," Elon replied with a smile, hinting that Cisco's circle of otherworldly friends would soon expand.

Joined by Caitlin, who had completed the urine test, they commenced the brain examination, with Dr. Wells silently observing, his eyes twinkling at the mention of 'Spark.'

After undergoing a series of scans — MRI, PET, CT, EEG, and cranial magnetic resonance — Cisco expressed his bewilderment, "Why, my interdimensional friend, do you not have a brain?"

The screen showed a dark silhouette where the brain should be, devoid of the normal display of gyri and sulci.

"This isn't normal," Caitlin initially thought it might be an equipment malfunction, but after testing Cisco and finding no issues, they concluded that people from another world apparently had black brains. Elon rolled his eyes at this absurdity.

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"Check for energy signals," Dr. Wells suggested, intrigued by this interdimensional visitor.

Soon enough, Caitlin announced, "Dr. Wells, there is indeed an energy wavelength in Elon's brain, distinct from normal brainwave patterns."

Dr. Wells squinted at the spectrum, suspecting that Elon had acquired the Speed Force. The wavelength bore striking similarities to that of the Speed Force, which Wells had studied extensively. He wasn't entirely certain of the Speed Force's presence in Elon, though.

They decided not to dwell on why Elon's brain appeared black and moved on to other tests.

"Let's check the rest of the body..."

Caitlin approached with a syringe, aiming for Elon's arm. Unintentionally sensing danger, Elon's cells surged, muscles contracted, and before the needle could penetrate, it bent — it couldn't break through the skin.

Shocked, Caitlin tried another needle and tapped Elon's arm, "Relax a bit, I can't get it in."

Elon relaxed his arm, feeling a vague sense that he could control his body's cells.

The blood drawn left them in awe. Inside the syringe, the blood shimmered with a silver glow, like stars, emitting faint twinkles. The entire tube of red liquid was interspersed with silver light, looking both mystical and beautiful.

"My God..." they all gaped at the sight, which was nothing like human blood.

As the blood left Elon's body, he felt an urge from the cells in the syringe to return to their host. Suppressing his instinct, Elon calmed the cells, and the silver glow dimmed. He realized he could control his body's cells — a startling revelation.

Keeping this to himself, Elon thought he was too strange, too oddly transformed by lightning.

Before the blood test results came back, they conducted EKG, ultrasound, X-ray, infrared imaging, bone density, and neurological tests, continuing until about one in the afternoon.

Suddenly, a blur appeared in S.T.A.R. Labs, stirring a gust of wind and yellow arcs of electricity, scattering papers everywhere.

"What's happening to me? I'm running super fast, and everything around me is frozen," Barry Allen exclaimed, hands outstretched, bewildered and curious.

That morning, when Barry woke up, the world seemed to have stopped — Joe frozen mid-coffee sip, cars on the street halted, birds suspended in the air. It was all very sudden and frightening.

Then, just as abruptly, everything resumed motion, which scared him even more. When trying to save a falling Garfield cat and accidentally running too fast into a tree, Barry realized he had gained super speed. The thrill of surpassing all speeds was too cool.

Now, he had come to S.T.A.R. Labs looking for answers to his transformation.

"Are you also a meta-human? Super speed? Time stopping?" Cisco inquired. It wasn't surprising that Barry was a meta-human; after all, the same lightning bolt had struck two people, and here was an even more miraculous visitor from another world.

Caitlin, ever the professional, stated, "According to human physiological limits, the maximum speed is 9 meters per second."

Barry didn't reply. He became a blur, trailing yellow electricity, and vanished from sight.

The others exchanged looks of amazement, their internal consensus being that Barry's speed was beyond visual tracking.

Before they could discuss further, they sensed another blur, and suddenly, an ice cream cone appeared in their hands.

Elon, who had been studying black holes and space on his tablet all morning through the checkups, was slightly bewildered. He didn't know how far the nearest ice cream shop was, but it certainly wasn't within S.T.A.R. Labs — a place so large, it took an ordinary person knowing the layout about seven to eight minutes just to walk out, let alone buy an ice cream and return.

So, Elon was a bit baffled. This speed was too fast.