For Sonic Frontiers, and future Sonic the Hedgehog series: I wish there could be a new female character similar to Mana the Hedgehog/Dark (fan-made) as an anti-hero.
The opposite version of Mephiles the Dark (from Sonic the Hedgehog 2006/Sonic 06)
Mane 6 (Twilight Sparkle, Rainbow Dash, Pinkie Pie, Rarity, Applejack, and Fluttershy), Sunset Shimmer, and Starlight Glimmer reaction of "Dr. Starline" the Platypus (from My Little Pony Friendship is Magic, and IDW Sonic the Hedgehog comic book series)
"Shadow the Ultimate Lifeform" reaction of "Freom" wearing Shadow's hover shoes? (from Sonic the Hedgehog and Spark the Electric Jester series)
Pikachu reaction of Cozy Glow (from Pokemon, and My Little Pony Friendship is Magic series)
Kari Kamiya and Gatomon reaction of Cozy Glow (from Digimon, and My Little Pony Friendship is Magic series)
(Part 1) Scourge (Evil/Anti Sonic) and Quint a.k.a. Megaman/Rockman Shadow (from Archie Sonic the Hedgehog comic book series and Mega Man/Megaman series)
Hint: (Not my artwork)
Sonic the Hedgehog and Tails Prower vs. Infinite (former Jackal Squad leader; the Ultimate Mercenary)
😥Poor Infinite, I felt bad for him.😔
For future Sonic the Hedgehog series: I want Shadow the Ultimate Lifeform (with E-123 Omega) to fight against "A New Female Character (swordfighter)" as a new rival, and the return of "Infinite".
While "Rouge the Bat" went missing for some reason.
Similarities between Luna Platz and Lumen/Joule (from Mega Man Star Force, Megaman series, and Azure Striker Gunvolt series)
Sonic the Hedgehog series: After Shadow the Ultimate Lifeform, and E-123 Omega defeated and killed a female version of Infinite (with wings) with her sword of darkness, Shadow start taking off her mask and reveal herself.