This was pretty much my reaction to the XY Mr. Mime animation, too.

Once they left the Pokémon Center, they saw yet another Team Flare grunt, but the grunt didn't seem to be causing any trouble. They would have completely ignored everything, if the grunt hadn't seen them and decided that, hey, maybe he did want to cause trouble after all.

"Do you really want to know our plans so badly?"

"Not really," Calem said, but the grunt had spoken over him, so only Serena heard.

"We're going to use the stones on Route 10 and a fantastic treasure to make the entire world Team Flare!"

"And there it is," Serena sighed.

Before either of them could ask exactly how Team Flare planned to brainwash the entire planet to be a part of their group, or what they planned for once they'd won, the grunt disappeared, cackling like the generic henchman he was. No more than two minutes later, when they had finally found the exit to town, they ran into a familiar Lucario.

"Hey, there," Calem said, as Lucario allowed him to pet his head again. "Where's your trainer? You didn't run away, did you?"

Lucario pulled away, almost embarrassed, and Calem's question was answered by Korinna gliding toward them.

"You're getting to be a real pain in my butt, Lucario," she said, like it mattered. Lucario made a sound of protest and gestured at Calem. "I get it, you want to battle. That is no excuse."

Lucario seemed to think it was a great excuse, but went back to standing with the other one.

"I wouldn't mind a battle," Calem said quickly. "It would make that one Lucario stop following us, right? We can take it."

"I'm not sure Eevee can," Serena said quietly.

"We can take it," Calem promised. "And if I lose, it won't matter. Right?"

"Right," Korinna agreed. "Let's get it done."

When the battle ended, Korinna admitted that she saw why Lucario was so drawn to Calem's aura. She still didn't understand why he was so drawn to Serena's.

Calem had a much better reaction when his Holo Caster went off this time, compared to when Tierno had called back in Lumiose City. Well, he had a better reaction to the fact that he was getting a call. Who was on the other end got a much more annoyed reaction.

"What do you want, Professor?"

Sycamore pretended not to notice Calem's irritation. "I simply wanted to congratulate you," he promised. "After all, you are the Pokedex carriers with the most interest in Mega Evolution, and you are getting close to Shalour City."

Serena reached for her Pokeballs. "I have more Pokémon than I did back in Lumiose," she said quickly, to his amusement. "I was, um, wondering if Mawile or Pangoro can Mega Evolve?"

"Mawile actually can," Sycamore told her. "But you would need a Mawilite, and I'm afraid I don't have one to give you."

"So what's in Shalour City?" Calem asked, getting the professor back on topic. "Something about Mega Evolution, I'm guessing, but what exactly?"

"A man," Sycamore answered. "Well, the entire Tower of Mastery, but the Mega Evolution Guru in particular. I've already told the others, but since you were traveling together, I decided to just call one of you and hope the other was listening."

"Then it's a good thing we're together." Serena smiled far too sweetly for Calem's comfort.

"Wish us luck, Professor," Calem said, preparing to turn off the device. "We're going to be cave explorers."

"Bad idea, bad idea, bad idea..."

Serena knew what he meant. Going through Reflection Cave, instead of cheating and finding someone willing to take them around it, was a very bad idea.

She'd always loved shiny things, and if Calem had been in his usual state of mind, he might have teased her about how her reflection was on every wall. She would have pointed out that she looked fantastic, as always, and it would have been like every other dark place they'd been through on this journey.

But, wouldn't you know it, Calem had nearly wet himself at the sight of a Mr. Mime and was currently holding a Repel as if it were a grenade, chanting "Bad idea" under his breath. She wasn't sure if he planned to spray the Pokémon repellent or throw it at the offending creatures, but she wasn't about to question his reasoning.

"Why didn't you mention this fear earlier?" she asked instead.

Calem mumbled something about being manly and returned to his panicked chanting. Serena sighed.

"You want that shotgun, don't you?"

Calem nodded again, shuddering as one of the offending beasts did "that thing with the hands." Serena knew that she was also a little creeped out by the puppet-like movements, and did not blame her friend in the slightest for having a panic attack at the fact that they were surrounded, but she had to ask.

"Bad childhood experience?"

Calem shook his head. "Horror movie," he corrected.

Oh. That would explain such a negative reaction. "We're almost there," she reassured him. "Just keep using that Repel until it runs out."

She didn't need to tell him twice.

Calem didn't like it and made that point clearly, but Serena ignored him and took the opportunity to train. She avoided all things Mr. Mime, of course, out of respect for her friend. But she had no such problems sending Mawile and Juliet out against a Wobbuffet or two, or Pancham against an entire horde of Roggenrola.

But it did nothing to help when they found sparkly-looking Pokémon, such as Sableye and one that Calem had never seen but Serena identified as a Carbink.

"It's one of those 'mysterious' ones," Serena explained, as Calem looked uncertain about what to do. "People catch them to try to use them to summon the legendary Diancie."

Calem lowered the Repel in mild interest. "Does it work?"

"Sometimes." Serena shrugged. "But it's a lot more complicated than you might think."

"So how can we do it?"

"I don't know. The method of accessing Diancie changes every time." She held out a Pokeball. "Do you want me to give it a shot? They won't come near you with that spray, but I can do it."

Calem looked at the Carbink again, then shook the Repel can again. "Another time," he said. "We'll still be in Kalos after I get to the Hall of Fame, right? Even you will have to come back to see your parents. We'll do it then."

"And if you don't want to go into the cave again?"

Calem answered immediately. "I'll let you do it then," he said, as if it should have been obvious. "If our method works, you'll get to have Diancie."

Serena's answering smile reflected back at them from two different surfaces, so of course Calem noticed when it stopped. He also saw why - another Mr. Mime had stepped out of the shadows, curious at the sight of Serena. Calem hissed out a swear word he wasn't aware he knew.

The exit to the cave could not have come fast enough.