Noctowl glitters as it comes out of its Poké Ball. Due to its psychic abilities, it has been used many times to find and battle Ghost Pokémon as well as for the usual flying requirements that Ash utilizes. Ash used it in a battle against Morty. Noctowl learned Confusion halfway through the battle and used it to defeat Morty's Gengar. Ash left it at Oak's possession, when he decided to make a fresh start when he left for Hoenn.
Noctowl is also the only shiny Pokémon in the anime to sparkle when it leaves its Poké Ball.
Noctowl is the only one of Ash's bird Pokémon to have been fully evolved when it was captured. As such, Noctowl is also the only Flying-type Pokémon currently owned by Ash that did not evolve under his ownership.
Despite Pokédex entries in the games stating how Noctowl can fly without making a sound, Pikachu was able to beat Noctowl by listening to the sound of its wings.
Using Air Slash
Ash and Noctowl
Noctowl stopping Haunter's Night Shade with Tackle