Luxio

Luxio (Japanese: ルクシオ Rukushio) is an -type Pokémon introduced in Generation IV.

Evolution
Luxio evolves from Shinx as of level 15, and evolves into Luxray once it reaches level 30.

In the anime
Clemont revealed that he made friends with a Luxio when it was a Shinx in his childhood memories. But during his absence, Shinx evolved.