Mio's Vaporeon nicknamed Vaporino
Eevee is Mio's fifth Pokemon she caught in Full Moon's Full Pokemon Journey. He debuted in The Light Music Pactio Club!. He evolved into Vaporeon in An Eeveelution Solution! and learned several moves and activated his Water Absorb ability.
Vaporino, As an Eevee
In "What's In a Nickname?", he was officially nicknamed Vaporino by Mio, and even nicknamed the other Pokemon she has.