In Pokémon: Vermilion/Purple, how to defeat the sniper Tree Owl in Pokémon Vermilion can be referenced as follows:
"Pokémon Vermillion" Sniper Tree Owl is recommended to use the Intimidator, and our status will be cleared randomly in 1-3 rounds. It is recommended that Milton play Sniper Tree Owl.
How to play: Charge→Metallic Sound→Support Charge and Attack to increase damage→Lightning Charge.
First, use [Charge] to double the power of electric-type moves. Although sniping the tree owl will clear the promotion level here, the charging status will still be maintained.
Then use [Metallic Sound] to reduce the special defense by 2 levels. In addition, the effect of [Throat Spray] can increase the special attack by 1 level. However, the hit rate of [Metal Sound] is 85, and it will miss occasionally. The electric field lasts for 5 rounds, allowing one miss. If you miss twice, it is recommended to try again.
Then use the support [Charging Attack], which, unlike [Metal Sound], can steadily increase your own damage. Finally, when everything is ready, use [Lightning Dash] to launch an attack.