Chuck (Sparks)

Chuck is the Gym Leader of Cianwood City's Gym, known officially as the Cianwood Gym. His specialty is Fighting-type Pokémon. All trainers who defeat him receive the Storm Badge. He took Jax on as his apprentice.

Sparks: Gold & Silver
Chuck first met Jax when the young trainer got lost on his way to Cianwood city. Seeing something in the boy he challenged Jax to a battle, Heracross vs His Machamp. Chuck defeated Jax and informed him that he would never be able to be the Cianwood gym leader with that level of power and offered to train him, to which Jax gladly accepted.