Daisy Oak is the older sister of Blue, the player's rival, and the granddaughter of Professor Oak. In Pokémon Red, Blue, Yellow, FireRed and LeafGreen she gives the player a Town Map after they receive their first Pokémon, even though Blue tells her not to. FireRed and LeafGreen's Fame Checker fills in her background: Pokémon of every kind adore her, she drinks tea daily from the Celadon Department Store, and she once won the Spring Pokémon Contest.
In Gold, Silver, Crystal, HeartGold and SoulSilver she still lives in Pallet Town and grooms one of the player's Pokémon once a day between 3 and 4 p.m., raising its friendship. In HeartGold and SoulSilver, after seven groomings and a look at a Pokémon with maximum friendship, she hands over Blue's Pokégear number so the player can arrange rematches with him.
She has no clear counterpart in the anime. In the Pokémon Adventures manga she works as Professor Oak's research assistant, later assists Bill, and eventually becomes a doctor, while The Electric Tale of Pikachu has an equivalent character named May who gives Ash a Town Map. She is the one named human character from Red and Blue left out of Let's Go, Pikachu! and Let's Go, Eevee!, where Trace's sister fills her spot.
Her card is Daisy's Help, a Supporter from the 151 set (2023): an Uncommon at #158 illustrated by Tomomi Kaneko, and a full-art Ultra Rare at #195 illustrated by Fumie Kittaka. It draws two cards and lets you look at your face-down Prize cards.
The Uncommon Supporter, illustrated by Tomomi Kaneko.
The full-art Ultra Rare version, illustrated by Fumie Kittaka.
Daisy Oak, Professor Oak's granddaughter and the older sister of Blue, the rival in Pokémon Red and Blue. She lives in Pallet Town.
She gives a Town Map in the Kanto games and, in the Johto games, grooms one of your Pokémon once a day between 3 and 4 p.m. to raise its friendship.
It is a Supporter that draws two cards and lets you look at your face-down Prize cards.

TRAINER
2 Trainer cards · 0 partner Pokémon
Daisy Oak is Professor Oak's granddaughter and Blue's older sister, the Pallet Town neighbor who hands the player a Town Map in Pokémon Red and Blue. Her Supporter card, Daisy's Help, debuted in the 151 set (2023).
No published index yet — too few of Daisy’s cards trade often enough to strike one.
Daisy's Help151 · 195$2.97+1.4%71Quant score71 / 100
Daisy's Help151 · 158 · Normal$0.20+5.3%53Quant score53 / 100