Roseanne is one of Professor Rowan's assistants and is found in his laboratory in Sandgem Town, in the Sinnoh region. She appears in Pokémon Diamond and Pearl (2006) but is never named there. The trading card game named her first: the Supporter card Roseanne's Research, released in Secret Wonders in 2007, revealed the name, and Pokémon Platinum then used it in the games. She is also in the Brilliant Diamond and Shining Pearl remakes.
She is a minor character with no battle role; she stays in the lab rather than challenging the player. She is not the only Sinnoh character who owes her name to a card. Felicity, who runs the Pokémon Lottery Corner at Jubilife TV, also goes unnamed in Diamond and Pearl, and her name first appeared on the Supporter card Felicity's Drawing.
The Pokémon Adventures manga gives her more to do: in the Diamond and Pearl arc she is left minding Rowan's lab when a swarm of Yanmega invades it, and she keeps a Dunsparce. Later arcs bring her back beside Rowan, including a flashback in the Sun and Moon arc where she hands Mr. Berlitz a Rotom meant for Professor Kukui.
Roseanne's first card, Roseanne's Research, is a Supporter that searches the deck for up to two cards in any mix of Basic Pokémon and basic Energy, shows them to the opponent and puts them into the hand. It appeared as an Uncommon in Secret Wonders (November 1, 2007), numbered 125, and was reprinted the following year in POP Series 8 (September 1, 2008) as #11, both printings illustrated by Kanako Eo.
More than fourteen years later she returned with a new Supporter, Roseanne's Backup, in Brilliant Stars (February 25, 2022). It lets you choose one or more of four effects, each shuffling a card from the discard pile back into the deck: a Pokémon, a Pokémon Tool, a Stadium or an Energy card. Brilliant Stars printed it three times: an Uncommon (#148) illustrated by Nagomi Nijo, a full-art Ultra Rare (#172) and a Secret Rare (#180), the last two both illustrated by kirisAki.
Roseanne's cards split between two Supporters printed more than fourteen years apart. Roseanne's Research is the card that named her, in its Secret Wonders original or the POP Series 8 reprint. Roseanne's Backup offers the modern treatments: kirisAki's full art at #172 and the Secret Rare at #180, numbered above the set's 172-card total. No Pokémon card carries her name.
Her first card and the first official use of the name Roseanne, illustrated by Kanako Eo.
The 2008 POP Series reprint of her first card, with the same Kanako Eo credit.
The Uncommon that introduced her 2022 Supporter, illustrated by Nagomi Nijo.
The full-art Ultra Rare printing, illustrated by kirisAki.
The Secret Rare, numbered above the set total, illustrated by kirisAki.
Two Supporters: Roseanne's Research, from Secret Wonders (2007) and reprinted in POP Series 8 (2008), and Roseanne's Backup, from Brilliant Stars (2022), which includes a full-art Ultra Rare and a Secret Rare.
Neither. She is one of Professor Rowan's lab assistants in Sandgem Town, Sinnoh, with no battle role in the games.
The trading card game named her first. Diamond and Pearl left her unnamed; the Supporter card Roseanne's Research (2007) revealed the name, and Pokémon Platinum then used it in the games.
You choose one or more of four effects, each shuffling a card from your discard pile into your deck: a Pokémon, a Pokémon Tool, a Stadium or an Energy card.
| # | Card | Set | Year | Rarity | Price | 30D | |
|---|---|---|---|---|---|---|---|
| 1 | Roseanne’s Research | POP Series 8 | 2008 | Uncommon | — | $12.91guide | +14.9% |
| 2 | Roseanne's Research | Secret Wonders | 2007 | Uncommon | — | $3.50guide | +7.4% |
| 3 | Roseanne's Backup | Brilliant Stars | 2022 | Secret Rare | Holo | $3.12guide | +1.0% |
| 4 | Roseanne's Backup | Brilliant Stars | 2022 | Ultra Rare | Holo | $2.44guide | -3.6% |
| 5 | Roseanne's Backup | Brilliant Stars | 2022 | Uncommon | — | $0.15guide | 0.0% |
Ranked by each card’s main print in near-mint raw condition. 1st Edition, Shadowless and other versions are priced on each card’s page. The table updates live.
The most valuable Roseanne card is Roseanne's Research from POP Series 8, printed in 2008. All 5 of the Roseanne cards carry a market value, and they span the years 2007 to 2022. It is a small group, so Roseanne card value rests on just a few prints: two versions of Roseanne's Research and three of Roseanne's Backup.
POP Series 8's Roseanne's Research from 2008 is an Uncommon and leads the most valuable Roseanne cards by 3.6 times over the next card, the Secret Wonders Roseanne's Research from 2007, also an Uncommon. Third through fifth are all Roseanne's Backup from Brilliant Stars in 2022, printed as a Secret Rare, an Ultra Rare and an Uncommon. The top two are older Trainer cards from the Diamond & Pearl and EX eras, while the Brilliant Stars trio comes from the Sword & Shield era.
Among the 110 characters with priced cards, Roseanne ranks 65th by the value of the single leading card. With only 5 cards in total, Roseanne cards form a compact market, and the order within it comes down to which of the two Roseanne's Research prints and three Roseanne's Backup prints is being measured.
Written from market data as of October 29, 2026; the table updates live.
TRAINER
5 Trainer cards · 0 partner Pokémon
Roseanne is one of Professor Rowan's assistants in his Sandgem Town lab, unnamed in Pokémon Diamond and Pearl until a trading card gave her a name. Her cards run from Roseanne's Research in Secret Wonders (2007) to Roseanne's Backup in Brilliant Stars (2022), including that set's Secret Rare.
No published index yet — too few of Roseanne’s cards trade often enough to strike one.
Roseanne's BackupBrilliant Stars · 180$3.12-0.3%77Quant score77 / 100
Roseanne's BackupBrilliant Stars · 172$2.44+2.1%70Quant score70 / 100
Roseanne's ResearchSecret Wonders · 125 · Normal$3.50+1.7%69Quant score69 / 100
Roseanne's BackupBrilliant Stars · 148 · Normal$0.150.0%43Quant score43 / 100