Semi-Fatl, take a Mew. It cannot know TM, HM, or Move Tutor moves of any kind (in other words, it can only know level-up moves). It cannot be used in combat until it reaches level 40 or you have six gym badges.
Generally the purpose of a Scramble challenge is to pick your play-through team from start to finish. I've never seen someone request a new team after each and every gym, since it would be quite annoying for the average person to do.
@semi, since you say anything, you get a shiny charizard! You must hack it in as a charizard. This charizard wishes it were a rayquaza so you must give it airlock as an ability. Aditionally it wants to learn as many dragon/flying moves as it can so give it Dragon dance, Whirlwind, Defog/Feather dance, and any flying/dragon type attack under 71bp you want. Its name shall be Dark Rayza, its trainer name must be DarkRay and id must be 09001.
EDIT: Can't trade so I don't want Dark Rayza after you're done.
@semi: Since you're doing Pokesav, Take Memphis the...Arceus! (Just kidding, sorry.)
Take Memphis the shiny Feraligatr (hacked in at level 1 as a Feraligatr). It must know Waterfall, Night Slash, Flare Blitz, and DynamicPunch. Its EVs and IVs must be maxed out in Attack and Speed, and its ability must be Volt Absorb. It may never be the lowest- or highest-levelled member of your party.
EDIT: Just realized how utterly insane this moveset is.
EDIT 2: Oh, and the OT ID is 38116, which is the ZIP code of one of Memphis' most famous attractions. Google it if you want. (Hint: It's fit for a king.)
Me: Squirtle (Leader): May only use moves Ash's Squirtle knew, which were Water Gun, Skull Bash, Tackle, Bubblebeam, Withdraw, Hydro Pump, Bubble & Rapid Spin. Team must be named SqrtlSquad (Aditya8081)
Partner: Pikachu (Chocapic): Must know & keep Quick Attack & Thunderbolt. Must be fed 5 Yellow Gummis (zdrup15)
Spearow: Must have the "Lets go Together" Tactic. At all times, it must either have Exclusive move-user active and only one move picked, or exclusive move-user turned off and no moves set. (auramaster)
Phanpy: Must be fed every Gummi in the game except the 5 given to Pikachu (Texas Cloverleaf)
Entered Silent Chasm.
Recruited CH'Ding! the Farfetch'd & made it to the end. Chocapic got his first Yellow Gummi.
Cleared Mt. Thunder & beat Zapdos after a tough battle, where Chocapic used up 2 Reviver Seeds.
Went to Great Canyon, recruited Trunkie the Phanpy (A Scramblemon) & escaped the dungeon.
Did a rescue mission in Mt. Thunder & recruited Bambi the Stantler.
Cleared Great Canyon after a tough trek.
About to start the fugitive part of the game.
Leader the Squirtle @ Special Band
Moves: Water Gun, Water Gun, Sky Attack
EV's: 255 Attack, 255 Speed
Trainer Number: 24748
Trainer Name: OLD MAN
It cannot hold any items, you can't use any items on it that didn't exist in Gen I, and it can only battle Gen I Pokemon.
EDIT: I think my Flareon had a Happiness of 250 or 251, on a scale of 0-255. If Serebii's Damage Formula is correct, then ANY Pokemon with max happiness using non-STAB Frustration for neutral damage will do 2 damage to anything :( So my Flareon could be level 255 and only do 10% to that level 2 Mankey if I battled it again.
@Semi-Fatal, I don't think you will get 48 pokemon for your scramble (people have had trouble getting 24 in the past), so I would suggest switching every 4 gyms (gives you 4 teams, a total of 24 pokemon) or just having seperate teams for the johto and kanto parts (total of 12). It's up to you, I just wanted to put my 2 cents in.