>>53471500 In her Sync Pair Story, Sygna Suit Cynthia reveals that she raised her Kommo-o from an Egg she received in Alola.
Possibly as a reference to Sygna Suit Cynthia, Cynthia was revealed to own a Kommo-o in the anime episode The Gates of Warp!.
Cynthia is the first Trainer to have more than one Sygna Suit.
Sygna Suit Cynthia (Renegade) & Giratina are the first sync pair that can create type-based zones.
Similar to Sygna Suit Cynthia (Renegade), Giratina is also used in Pokémon Legends: Arceus by Volo, who bears a striking resemblance to Cynthia. Incidentally, Cynthia's battle theme in this game also shares the same melody as Volo's.
Cynthia is the first Trainer to form more than one Master Fair-exclusive sync pair.
All versions of Cynthia use special voice-over lines upon entering a team that contains certain Trainers (regardless of their partner Pokémon). Those Trainers include Lucas, Dawn, Cyrus, Professor Oak, Caitlin, Diantha, and Professor Sycamore.
Cynthia also uses special voice-over lines upon winning a battle with Dawn, Cyrus, Caitlin, or Diantha in the same team.
Cynthia and Garchomp are the only sync pair to have their sync grid expanded on three separate occasions after their initial release.
They also have more tiles on their sync grid than any other sync pair.