What are all the Pokemon with a different look when its hidden?

Question

When you see hidden Pokemon in grass or water or in a cave, some of them look like theyre supposed to, and not as a dark shape. Ones I know of are pikachu and skitty, but can anyone make a list of all of them?

Comments

Wait...
Who retagged?

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Probably a Mod

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It says retagged x hours ago but it didnt say by who...

Answer 1

Skitty (It's tail)
Poochyena (It's tail)
Pikachu (It's tail)
Zigzagoon (It's tail)
Ralts (The top of it's head)
Kecleon (It's invisible)
Sharpedo (It's fin)
Roselia (Flower "hands")

Comments

This is fairly old, but I just want to add that roselia also seems to have this effect.

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Its pom pom flowers, right?
I can't find anything about it and I lost my OR game, I'll try to see if it works asap

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The top of its head (slightly) and its arm-flowery things

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Another one. Sharpedo's fin

Answer 2

All Pokémon will appear as a shadow (grass), wave (water), dust ball (cave), ghost (ghost type-Pokemon) or light (some electric type Pokémon) except Poochyena, Skitty, Pikachu, and Zigzagoon who will show each of their respective tails.