Costa

Costa is known to be Black's fifth Pokemon. It originally belonged to Marshal of the Unova League Elite Four until it was released. Black caught it later in Nimbasa City.

Character
According to Marshal, Costa is very stubborn, being unable to obey any of its trainer's commands. Even with Black, it still gains its same charactersitics.

With Marshal
The day before it was caught, Marshal had Costa with him by the time Black and White meet him and Alder battling each other in the Battle Subway. After losing to the Champion, Tirtouga was released in Nimbasa City due to disobedience.

With Black
Sometime later in Nimbasa City, it comes upon Black again, which it was battled and defeated by him and later caught and named Costa.

Druing the Gym battle with Driftveil Gym Leader Clay, he fought against his Krokorok. After a few strong attacks, Costa ended up defeating Krokorok alltogether.

Known Moves

 * Water Gun