Bowser: Bwa ha ha!!! I'll disguise myself as the princess, then Mario will fall for me!
Bowser: I just hope he doesn't notice my large spiked shell.
Mario: Why Princess... did you bleach your teeth? Something's different about you...
Bowser: Um, I've been working out, bwa ha ha!!!
Mario: Well-a, you certainly do look hard-a!
Bowser: Come on back to my castle, and I'll help you come out of your shell (and your pants!).
Mario: Wowza! After all-a those times you slapped me for-a making the same-a suggestion?
Bowser: I've changed! Really! *kisses Mario*
Mario: Ooh-a! Ooh-a! Take-a me, Princess! *runs fingers through Bowser's wig, accidentally knocking it off*
Bowser: Uh... I  uh... dyed my hair red, uh. Do you like it, uh?
Mario: Hey-a! You-a aren't-a the Princess! However, you do-a look-a good in pink!
Bowser: Why, thank you! *blush*
Mario: *can't contain himself any longer and throws himself at Bowser* Kiss-a me some more-a, you-a scaly fool!
Bowser: Yowza! Okay, you big plumber!
James: Kiss me, you big plumber!
Jessie: *bashes James on the head with a mallet*
Meowth: Get to work, you screw-ups! *scratches them both*
Mario: Hey-a! That's-a the sexiest Hammer Brother I've-a ever seen-a! *chases Jessie*
Bowser: Mario... come back. *sigh*
Princess Toadstool: *bakes a cake*
Charmander: Char, char! (translation: Hey, you big lizardy studmuffin!)
Bowser: Char? Huh?
Meowth: He said you're a big lizardy studmuffin!
Bowser: Ah! A talking cat! And a hentai lizard! I'm outta here! *climbs in his clown copter*
Voice: That's my copter now! Vwee hee hee!
Charmander: *sniffles* Char? (translation: huh?)
Kefka: LIGHT OF JUDGEMENT! *blasts Charmander*
Charmander: Chaaaaaar!!! (translation: Ouch, that hurt you son of a-) *dies*
Kefka: Vwee hee hee!
Kefka: You're next, Pikachu!
Kefka: Nothing can beat the sound of thousands of Pokemon screaming in unison!
Toad: Heh. Now that that Charmander is out of the way, nothing can keep me from my lover, Bulbasaur!
Bulbasaur: Bulbasaur? *translation: The hell?*
Toad: Gimme some of that Leech Seed, darling!
Squirtle: Squirtle! *chases Ash*
Bulbasaur: Bulbasaur! *Translation: Toad no baka!*
General Leo: Kefka, stop! Don't be pompous! And don't forget that they are PEOPLE, just like you and I!
Kefka: Vwee hee hee! Hey, wait a... no, they aren't! They're pokemon!
Kefka: *kills Leo*
Gestahl: Kefka! You sick, sick $%*#! You're demoted!
Kefka: Damn! *kills Gestahl*
Gestahl: Nooo! I will not die here! *vanishes ala FFT*
Kefka: Crap.
Jessie: Hey keffie... Prepare for trouble!
James: Make it double!
Kefka: Huh?
Leo's corpse: Aw crap.
Jessie: To protect the world from devastation!
James: To unite all people within our nation!
Jessie: To denounce the evils of truth and love!
James: To extend our reach to the stars above!
Ash: Oy.
Jessie: Jessie!
James: James!
Bowser: Bowser!
James: Huh?
Dr. Frank N. Furter: Rocky!
Rocky: ...?
Meowth: *scratches Bowser*
Bowser: *spits fire at Meowth* Run, run, or you'll be well done!
Kefka: Vwee hee he-hey! That's my line!
Bowser: *stomps the ground next to Kefka*
Kefka: You overgrown lizard! Son of a submariner! *uses Light of Judgement on Bowser*
Mario: Noooooo-a! My-a beloved Bowser! *uses a P-Wing to transform into Safer Mario*
Kefka: Crap! *vanishes ala FFT*
Choir: Veni veni venias, ne me mori facias, MARIO! MARIO!
Bowser: Mario... you have to go on... don't give up, Rose... I mean Mario...
Sephiroth: *kills choir* Prepare for trouble...
James: Uh, make it double?
Mario: Rose?! Who-a is Rose-a! *summons Meteor and crashes it on Bowser* Slime-a-ball!
Jessie: *hits James again*
Bowser: *dies*
James: Ow! You know I like it rough!
Jessie: Ahem... James, keep your mind on the mission!
James: Oh yeah! Uh, now where we?
Jessie: Uh... actually I don't know. We just kinda showed up, didn't we?
James: Are there any Pokemon here for us to steal?
Bulbasaur: Bul-ba.... (translation: What a couple of morons...)
Meowth: Meowth! That's right!
Jessie: *points at Koopa Kids* What are THOSE?
James: I... don't know. Let's steal them! Go, Koffing!
Jessie: Go, Ekans! 
Ekans: Ekanssssss!
Koffing: Koffing!
Ash: *pulls out Pokedex and points it at Koopa Kids*
Roy: Yo, dad, youse want us to bust them up?
Wendy: He's dead, you dope!
Pokedex: These-Pokemon-have-never-been-seen-before-in-our-world!
Pikachu: PIKA!
Jessie: Then they'll be a valuable gift to our boss! Ekans, Wrap attack!
Ekans: Ekansssss! (translation: Yeah, whatever.) *wraps Roy*
James: Koffing, smoke screen!
Ludwig: You can't do that to my brother! *tosses smoke rings at Ekans*
Large shape: *appears in the sky*
James: Huh?
Pikachu: Pika... chu?
Ekans: *coughs and lets go* Ekansssss.... (translation: That sucked! I want to go eat some rats.)
Lavos: *falls from the sky*
Pikachu: PIKA! *translation: I'm not a rat! Shock attack!* *shocks Ekans*
Mario: What-a the heck!? I summoned-a Meteor, not-a an alien!
Sephiroth: Grrr... I sense several copyright violations here...
Ekans: Ekaaaaaaans!! (translation: This guy are siiiick!!)
KawaiiKid: I always KNEW Square would go back to Nintendo!
Sephiroth: You dare to insult me? *sticks Ekans up like Midgar Zolom*
Jessie: Oh no! EKANS! You'll pay for that, you creep!
Sephiroth: *draws his sword* Bring it on, you Scarlet wanna-be!
Jessie: *reaches in her pockets* Err... uhhh... uhmmm... James? Do you, heh, have a Pokemon I could borrow?
James: Eh. Use Meowth.
Meowth: Whaaaaaat?!?
Sephiroth: Afraid to fight your own battles? Ha ha ha ha!!!
Jessie: Come here, you stupid cat! What good are you if we do all the fighting?
Meowth: Uh... I make the plans you silly humans! I'm not fighting that madman!
Jessie: Then.... *looks at Sephiroth* I guess I have no other choice...
Sephiroth: Huh?
Jessie: Hi-yaaaaa! *hits him with her heavily gelled hair*
Sephiroth: YEOUCH! You're gonna pay for that! SUPER NOVA! *hits Team Rocket with Super Nova*
Mario: Ha ha ha... was that Supernova? I will show you how! *summons another one and drops it on Sephiroth*
Sephiroth: You fat plumber fool! Know, live, become a frog! Frog! *hits Mario with Frog*
Rubicant: Hey, plumber! Now you're stealing MY lines! *shoots flames at Mario*
Vegeta: Your power level is weak!
Mario: Ribbit! Ribbit! (translation: You suck, Sephiroth!)
Hero from SoM: Rabite?
Sephiroth: Shut up, plumber!
Mario: Ribbit!
Hero: Oh... *leaves*
Voice: Thou vile knave!
Kefka: Vwee hee hee! *hits Mario with Light of Judgement*
Frog: *falls from above, impaling Sephiroth on HIS Masamune* How dost thee like it, o black-caped one?
Sephiroth: No... I can't die here...
Magus: Die, Frog! *hits Frog with his scythe*
Gestahl (from somewhere else): Well, we don't want you dying over here either, so forget about it!
Mario: Ribbit! *translation: Change me back, Frog!*
Frog: Arg... can't.... Magus... aaaaaahhhhhh, have thee no mercy in thy soul?
Magus: Um... NO!
Frog: *mutters* Thou jerk.
Magus: At least I'm a HUMAN jerk, toad breathe.
Mario: Ribbit! Ribbit! (translation: 'Learn' learns skills.)
Daravon: Ability is a skill you learn with job training! Off course!
Bulbasaur: Bulbasaur, bulba bulbasaur! (translation: So that are why we speech are being mess up!)
Daravon: Off course!
Frog: Hah, tongue-twisted one! I am immune to your powers, for I was translated by Ted Woolsey! Have at you! *slices Daravon*
Daravon: No, way! Not have I, much frontline, fighting experience! *disappears*
Gestahl: Hey, get out of our place! We were translated by Woolsey too!
James: Um... make it double?
Jessie: *hits James again*
James: So, do you want to play NOW? I can change in a few seconds!
Mario: Ribbit ribbit! (translation: OOh-a! Yes-a, I would-a like-a to see-a that!)
Jar Jar: Hey! You talking like meesa!
Ramza: *tosses a stone that hits Mario*
Darth Maul Version 2.0: *kills Jar Jar*
Mario: *evolves*
Ash: Um, Pokedex?
Pokedex: Mario-has-evolved-into-Mariodon!
Mario: *now looks like an even fatter plumber*
James: I've got to catch that! Pokeball, go!
Mario: Oh-a no! *gets caught*
James: YES! I caught my, um, third Pokemon! I'm so coooooooooool!
Princess: La la la! *skips along happily, then sees the scene unfolding* Aaah! Now who will eat this cake I baked?!
Ash: *steals James' Pokemon* How does it feel? Bwa ha ha!!!!
James: *cries*
Jessie: You little twerp! *hits Ash with her mallet for a change*
Ash: Ouch! *falls over*
Pikachu: PIKA! *translation: Thanks. It's about time somebody shut him up.*
Princess: *runs up to Lavos, who is currently showering the land with fire* Hi! Want some cake?
Lavos: Grrr... okay.
*Suddenly, 12 Sephiroth clones appear*
Jessie: Hmm... James may have caught a Pokemon, but this looks like my lucky day!
James: Mmmm... mine too!
Everyone: *stares at James*
James: What are you looking at? I make a coooooooool girl!
Roy: *returns to the scene* Hey, me too! See?
Wendy: HEY! That's my dress!
Mario: Yowza! Me-sa liken you!
Jar Jar: Ha ha! Meesa have returned from the Dark World, and now meesa is RED Jar Jar! *blasts Mariodon*
Darth Maul Version 2.0: *kills Jar Jar again*
Sephiroth clones: *stand by, watching in utter confusion*
Darth Maul Version 2.0: ... *translation: I have no lines.*
Sephy #1: Um... let's try to revive our master.
Sephy #10: Er... how?
Sephy #6: I dunno. Let's go kill Cloud.

TO BE CONTINUED.... maybe. *shrug*