In Pokemon Brilliant Diamond and Shining Pearl, players will eventually gain access to two NPCs that can help a trainer mess around with their Pokemon's moveset. The Move Deleter in the Sinnoh region can remove any attack from any Pokemon for no fee at all.
On the flip side, the Move Tutor can re-teach any Pokemon a previous move that players didn't choose for the Pokemon. So if a player has a level 60 Infernape, for example, players can take it to the Move Tutor and have it learn something
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