From Bulbapedia, the community-driven Pokémon encyclopedia.
Tomokazu Seki (関智一 Seki Tomokazu, born September 8, 1972) is a Japanese seiyū from the Pokémon anime. Currently his most prominent role is that of Kenji (Tracey Sketchit).
Roles on Pokémon
Other non-Pokémon roles
Musical appearances in Pokémon
Everyone Walk Together (Japanese: みんなであるこう！)
Coincidentally, Seki's full name has the same initials as Tracey Sketchit: T.S.