I figured what the heck, let’s have some fun with them, after all Luna is a gamer, she’ll appreciate me making old-school gaming references in her special attacks.

Here are Luna’s new Blitz inputs, with references spoilered because you shouldn’t need them if you’re a true gamer.

Pummel: Right-Up-A Clap code while in King of the Hill in Mortal Kombat
Moonbolt: X-X-Y-A Play minigames in SMW2 Yoshi’s Island (omits usage of the B button)
Moonlaunch: Down-Y-Down-Down-Y-A Play the bonus rounds Donkey Kong Country
Fire Dance: Up-Down-Left-Right-A Sonic the Hedgehog level select
Lunar Aura: Down-R-Up-L-Y-A Unlock mirror matches in Street Fighter II
Air Blade: R-R-L-R-Left-Down-Right-Up-A Unlock all weapons in GTA3
Cosmic Wind: L, R, L, R, L, L, R, R, A. Unlocks Time Trial for the Special Cup in Super Mario Kart
Eclipse: Up-up-down-down-left-right-left-right-A Fucking duh

L - A - R - A - Code to save Lucca's mother in Chrono Trigger.

Bring on the Star Wars Battlefront 2 (for PS2/XB, at least).

^^^<vvv<^^^<>A - Infinite Health
^v<vv<vv<vvv<>A - Infinite Ammo
^v<v<>A - Party Jedi/Comic Book BANG! Wampas.

You actually used Y in the inputs. I don't think I've seen that yet. In Pony Fantasy, the Konami Code was used for what is Lunar Aura in this game. I'm actually surprised you didn't mess with these sooner.

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That unfortunately wouldn't work because A is input.

6011406
Oh crap, right. I forgot about that. XD XABY similarly doesn't work as well then.

6011428
Yeah, can’t use B either because that cancels. So we have to find a cheat code that doesn’t use the B button and no A unless it’s the last one.

Wasn’t easy finding these as-is.

Well, instead of a cheat code, you could always have a go at this somewhat infamous move:

Those are the arcade input symbols; seeing as this game is on PS2, the B would be Triangle would be X on the SNES. Instead of finishing it off with G (which is X on PS2 and B on SNES), you could just have it be (insert directions here) + X, with the A at the end to finalize it.

If you're going to go with famous fighting moves, Moonbolt should probably stays as-is. There are few fighting game inputs nearly as iconic as the Haduken.

Beyond that, the only famous cheat codes I can think of need a keyboard, so they won't work. No IDKFA or IDDQD here.

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Got one that is satisfying. “ L, R, L, R, L, L, R, R, A.” Unlocks Time Trial for the Special Cup in Super Mario Kart

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A bit of a long code but appropriate for what is probably Luna's most broken Blitz.