I've struggled to create a reveal trailer for Reese, and I finally came up with one. Here it is:
The trailer starts with a normal game of baseball, featuring many of the beloved characters from the series, while a mysterious figure with a hoodie on is watching the game from a distance. Eventually, a Smash invitation falls into the stadium, and everyone starts beating each other up for the invitation. Eventually, Pablo Sanchez comes out on top, and as he is about to be announced as the final Smash Ultimate DLC character he is suddenly struck in the face by a baseball and falls to the ground where he passes out. When he finally wakes up he sees the figure in the hoodie, who was also responsible for hitting him in the head with a baseball. The figure then rips off the hoodie, revealing himself as none other than Reese Worthington. Reese then grabs the invite off the ground, gets his bat in an action pose as the tagline "Reese Batters Up!" appears on screen. The trailer was designed to bookend the pass, having a similar format as Min Min's trailer.