There's some test videos from Rodeo for the Pokeball Pokemon, reading the presentation again these would provide assistance to the main Ride Pokemon, with the examples being Pikachu and Lucario. Here they have Piplup and Geodude
Picture: Piplup using Surf
Piplup using a beam or a bubble attack:
https://files.catbox.moe/nqdjg2.mp4Piplup using Mist:
https://files.catbox.moe/ccr1jl.mp4Geodude using Protect:
https://files.catbox.moe/dg9m23.mp4Geodude pounding the ground with its fists:
https://files.catbox.moe/fd1jny.mp4