Blue Cop

Blue Cop (블루캅, Beullu Kab) is the secondary protagonist of the Metal Cardbot series alongside Jun Grant. Originally a member of the Star Guardians on Machina, he joined the Cardbots' exodus as the planet exploded with the Metal Breath bestowed to him by Deus Machina with his finals words: "use the Metal Breath to find a friend". After arriving on Earth, Blue Cop met Jun Grant, who was accepted by the Metal Breath, and became friends.

In the second season Metal Cardbot S, Blue Cop was reformatted by Mukara's Metal Breath and became Blue Cop S (블루캅S, Beullu Kab Eseu).

In the third season Metal Cardbot W, Blue Cop was infected by the Beast Virus pathogen from Phantom Hornet and reformatted into Blue Cop W (블루캅W, Beullu Kab Waildeu), becoming a Wild Cardbot carrier.

(Source: Metal Cardbot Wiki)