Sidney is a member of the Hoenn Elite Four. He specializes in dark-type Pokémon.
Sidney debuts in Chapter 245.
Steven Stone hunts down each member of the Elite Four to get them involved in the crisis fermenting in Hoenn. He has them gather at Ever Grande City, which they leave together. They go to Lilycove City, where the arrive in time for Steven to save Wallace from Mitch. Steven then sends the Elite Four to their assigned posts.
Sidney plays guitar. He is also very informal, as he is the only who to call Steven "Stevie."
Zangoose debuts in Chapter 251, posing with Sidney and the other Elite Four.
- Karen and Grimsley also train dark-type Pokémon
- All three of them are members of the Elite Four of their regions