Scene 1:
Recreate the scene with either a pink-haired Villager or Mii Brawler with a Toad Hat behind a shrunken Geno (Poison Mushroom effect). I'm assuming one of Geno's moves will be a rocket punch, which he'll show off against a shrunken Bowser and normal size Mario. Bowser will dodge the attack and hit Mario, who will already have enough damage to be sent flying. Have this take place in one of the rooms in Tomodatchi Life.
Scene 2:
I'd imagine a setup where Geno charges forward through a hail of arrows being fired from characters off-screen (sever versions of Link, probably), to deliver an uppercut (Up-air?) against a red-tunic Link also firing arrows representing Bowyer. Stage would best be fit if we get a Forest Maze section in the DLC, but for now let's go with Garden of Hope or Whispy Woods.
Scene 3:
Pretty lighthearted nod to the Docaty Mountain Railroad, have either Geno or Mario in the minecart in The Great Cave Offensive stage chasing the other down the tracks. Add in a super mushroom over the rider homaging the boost mechanic before it hits the fleeing party.
Scene 4:
Have Geno and Mario taunting or standing at the base of Princess Peach's Castle, then have Peach descend with her Parasol and join in, as if she's joined the party like the original.
Scene 5:
Have Geno on the Fountain of Dreams stage, where Star-themed items keep spawning from the sky (Super Stars, Launch Stars, maybe even a Starfy assist). Have Kirby crash down in front of him on a Warp Star, shocking him.
Scene 6:
Set it in Gerudo Valley, and have Geno fighting Meta Ridley holding the Staff item, who looks the closest to Yaridovich. This might be the best place to show off the Geno Beam, which surely would be in the moveset somewhere.
Scene 7:
Skyworld from Kid Icarus. Put Palutena in the back with Geno busting out his Heavy Smash attacks against a DeDeDe in his black alt. If possible, put in a stationary Gold Mario that Dedede turns back to, then ignores.
Scene 8:
Aboard the Halberd stage, Geno fights 5 differently colored Game & Watches, representing the Axem Rangers. I'd imagine Geno Flash as an AoE special, that he'd use here to demonstrate how many characters he could hit at once.
Scene 9:
Put Geno fighting a Shovel Knight assist trophy on the Midgar stage, with Metal versions of Meta Knight, ROB and Mega Man to homage the mass produced weapons of Smithy Factory. Bowser, Peach and or Mario could assist with the other fighters, while Geno maneuvers towards Shovel Knight.
