DJ Octavio Trailer
(Please note that this trailer makes some assumptions regarding the context of Octavio's fight in Wishing Stars, specifically, its location. If necessary, I am willing to change it.)
We start with an establishing shot of a stadium. It's outfitted with neon lights and surrounded by darkness--it's hard to tell whether it's at night or the stadium is located within a huge cavern. As we cut in to the stadium, we see two figures in the middle of fighting--an Inkling and an Octoling (both in their default designs). Large monitors above the stands show live feeds of the battle, and the audience is cheering.
Suddenly, however, the screens get overtaken by interference and static, distracting Inkling and Octoling while the audience starts to murmur in confusion and nervousness. The monitors switch to an image of what looks to be a large, vaguely circular machine almost completely covered in darkness. A familiar, low, watery laugh rings out. The monitors display static again before switching to an animation of a couple pieces of wasabi floating in purple sludge.
Then, the center of the arena opens up. Inking and Octoling get to the sides of the arena as the crowd gets riled up. Bright light shines out of the opening hole as the machine seen on the screen slowly rises up with
this song playing. When the song comes to an end, the machine attacks--throwing out a huge metal fist at Inkling and a takoyaki bomb at Octoling. Both narrowly dodge.
"
I Am Octavio" starts to play (starting at 0:06) as the machine's pilot starts scratching records with wasabi. After a couple seconds of shots showing the machine off, we get a full view of it and its pilot--"
DJ Octavio D-D-D-Drops the Sea Bass!!!" (as the splash text appears, the song skips to 1:37).
Transition into gameplay. Octavio is first shown idling and taunting in the stadium from the CGI portion, with no other fighters in view (so as to not raise suspicion regarding his size--this is his boss arena). We then see him performing various shenanigans across various stages: He jams with Barista on Night Walk. Multiple Octavios perform ink attacks on Moray Towers (like they're trying to claim it as their own). He leaps after Isabelle as she pulls back her fishing rod to make it look like she caught him. In his Splatoon 2 costume, he poses on Bowser's Castle.
When "I Am Octavio" reaches the "record scratch" segment at 2:12, we rapidly switch between shots of Octavio demonstrating some of his attacks--one per record scratch, though this segment is cut down to only eight scratches (at 2:19, it skips to 2:38). After this segment, we get an establishing shot of the Deepsea Metro stage, then a shot of the train starting to move, then various happenings on the stage: An Octoling (this one in its turquoise/Neo Octoling Armor costume) runs from Octavio after he barely misses grabbing them, and he chases only to be met by a group of turquoise Octolings. Octavio fights Callie and Marie Miis that soon gain reinforcements in the form of Pearl and Marina Miis. A slow-motion shot of an Inkling (in its yellow/Agent 3 costume) falling towards Octavio whole holding the Rainmaker.
Finally, Octavio unleashes his Final Smash on a large group of fighters, who are all overwhelmed by the Octarian army. The final explosion is exaggerated into the screen being covered with purple ink, making that purple the backdrop to the Smash Infinite logo when it appears.
The post-logo scene sees us back in CGI and at the stadium. Inkling and Octoling get knocked away, flung into the pit between the arena and the audience. As the audience (actually made up of Octarians) cheers on DJ Octavio, the screen is hijacked again--this time, it displays only an image of a star, and Octavio turns to the screen with a determined expression.