Here's why it's particularly effective against Zubat:
* Zubat's weakness: Zubat is known for frequently using "Substitute" to avoid damage. This move creates a copy of itself, taking the hit instead of the real Zubat.
* Mean Look's advantage: Mean Look prevents Zubat from switching out, forcing it to stay in battle and take the hit. This eliminates Zubat's ability to use "Substitute" repeatedly, giving you a better chance to defeat it.
In summary: Mean Look is a great tactic against Zubat because it hinders its ability to escape battle and avoid damage.