You have to beat all four elite four members, Aaron, Bertha, Flint, and Lucian before you can battle Cynthia. When you go to eterna city for the first time, and in the distortion world, you can see her and talk to her, but you can't battle her.
In Pokemon league
Beat the pokemon league Cynthia is the champion
The champion is Pokemon Diamond, Pearl and Platinum, is Cynthia. She has various Pokemon-types. She is the Sinnoh Champion. Her Pokemon are Spiritomb, Lucario, Togekiss, Milotic, Garchomp and Roserade. In Platinum, Cynthia has a Togekiss. In Diamond and Pearl, she has a Gastrodon.
No
Cynthia the Pokemon Champion has a Milotic in Pokemon Diamond, Pokemon Pearl and Pokemon Platinum.
Constipated.
She is the POKEMON CHAMP!She helps you through the story
Cynthia will give it to you.
Pokemon champion Cynthia has it
Cynthia elite 4
Get the SecretPotion from Cynthia
Cynthia gives it to you.