Which of these is NOT the name of a team leader in Pokémon GO?
Explanation
The answer is Leif because Leif is not the name of a team leader in Pokémon Go. The team leaders in the game are named Candela, Blanche, and Spark, who lead the teams Valor, Mystic, and Instinct, respectively. Leif is not associated with any teams or leadership positions in Pokémon Go.