Morty knows he shouldn't be screwing around with multidimensional shit. It's dangerous, it's impractical, it's blah blah blah. But it's a potential key to unlimited energy, how does nobody see that? He's built a dimensional siphon (it kind of looks like a cardboard box with a funnel and a TI-84 taped to it, but it damn well works), keyed in the dimensional coordinates to a random plane, and by God he's going to use it.
He flips the switch and waits for the energy bar to fill up.
It does! It fills up very rapidly. Then it explodes, along with the box. There's rather more smoke than there should be, and once the smoke clears someone is standing there.
"Oh dear," Morty says faintly.
"Maaaybe, but it'd be a heavier-duty illusion than just a grey bodysuit or something. Especially with Grimesy's mental protection. Basically your options are spandex and blur, at the moment."
She nods, unfurls a swirling blue aura around herself, and flies out the door.
Bella follows her, flickering rather than walking, looking for anyone in harm's way and taking note with a look over her shoulder of the exact location of the panic room.
The villain notices Ariel and flinches. "You! Supergirl! If you move one inch closer I'll fry her face off!"
Ariel raises her hands placatingly. "Didn't know you had a hostage, I can't do shit about that, I won't come any closer. Thought this was one of those situations where I could helpfully beat the living hell out of you."
"Well- you can't!"
"Nope."
Bella flicks to just within range of the hostage and then puts them both in the panic room.
Firebrand blinks.
Ariel puts her through a window.
After some very loud crashing noises, the panic room's intercom blares "Threat over! Return to your business! Thank you, Storm Hammer!" There's some polite applause, and the diners file back into the restaurant.
Ariel comes in a few minutes later. "Sorry about the wait, I had to arrange a deposition and all that. It's- hey, are you okay?"
"I'll be fine. Seems I freak out about fire, but hey, not to the point of anybody getting killed."
"Well, I can try not to quake any earth around you either if you think that might be a problem. Otherwise, I'll just make sure Xan knows to go light on the napalm when you're in the area."
"I can probably dig it out of my head now I know it's there. It caught me off guard. Things usually aren't on fire."
"And I thank Mutant God for that every day. Though I'm sure it'd be a very interesting world if things usually were."
"There is not in fact a Mutant God. There's some gods, but invoking them is kind of risky, so facetiousness."
(With each oath, she absently makes a quick gesture.)
"I am not inclined to oaths of that nature. Just the classic metastisized Valley-Girl-ism of 'oh my God'. Does the gesture help?"
"Judeo-Christian's safe; we're pretty sure something's taking up that conceptual space, but it's not doing much of anything and you can safely swear by it. The gesture's kind of like... the opposite of what you say? Like, swearing by something sends a little bit of energy its way, but the gesture shoves it back in. It's more trouble than it's worth until you've got enough magic intuition to do it on reflex, though."
"Okay. I'll avoid getting into spirited discussions of the spiritual beliefs of the ancient Romans, then, shall I?"
"You can say their names, just not, uh, invokishly. The Pantheon's not really the big threats, anyway, they actually incarnated themselves and got the living hell beat out of them a couple of years ago, so they're not in the best shape. Still best policy not to invoke them, but they're not so hot."
"Okay. 'Invokishly'. I'm pretty sure these entities don't, literally, exist in my world, I wonder why there's recognizable parallelism at all."
"Hell if I know. Maybe they're just recognizable patterns that show up when somebody needs a religion, and hereabouts that ended up coalescing into actual gods?"