Why can Accelgor learn Water Shuriken? I thought it was Greninjas signature move?

Question

Everybody talks about Greninja having Water Shuriken as signature move, but it says Accelgor can.

Comments

They are both ninjas

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Its like my question, there are some moves that are made for one pokemon, but another can learn it too. Example: Blaziken's Blaze kick can be learn by Hitmonlee.

Answer 1

They Probably did it cause Greninja had 2 Sig moves. Water Shuriken and Mat Block. This does make it unfair to Chesnaught and Delphox who only have 1. Also Accelgor is a Ninja himself wo wynaut?

Comments

What is delphox's?

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Mystical Fire

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I think Delphox should a signature protect move like the other 2.

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Don’t forget Throh can learn mat block.

Answer 2

Water Shuriken used to be Greninja's Signature Move prior to ORAS. GAME FREAK decided that because Accelgor is a ninja, he gets the move as well in ORAS.