Drew's Roserade first appeared in Now That's Flower Power! as a Roselia and was shown to be very powerful. Roselia was capable of defeating May's Beautifly and Ash's Taillow despite having a type disadvantage against both of them. However it was unable to defeat Robert's Milotic or Grace's Medicham later on.
In Kanto, Roselia appeared less often due to the fact that Drew was catching more Pokémon. At some point during Drew's travels in Johto, Roselia evolved into Roserade and was shown in a flashback using Mega Drain against one of May's Pokémon. It also appeared along with Drew, Harley and Solidad watching May in the Wallace Cup.