The Relation Game

[Sonata]

Mewtwo because it was also made by humans.

 

[Vinny Vidi Vici]

Darkrai as like Mewtwo, it was the star of a good Pokemon movie.

 

[Lycanthropy]

Cyrus, who owns a Darkrai according to the TCG.

 

[Dedenne1]

Palkia who was in the movie with Darkrai

 

[Sonata]

Dialga, the yin to Palkia's Yang.

 

[Lycanthropy]

Diamond, the game of which Dialga is the mascot.

 

[Sheep]

Turtwig because it's one of the selectable starters in Diamond and Pearl.

 

[bunny24680]

Torterra because it's the final form of Turtwig

Note: Also, Torterra is my favourite fully evolved starter in Diamond/Pearl/Platinum....

 

[Lycanthropy]

Trees, because one of those grows on Torterra's back.

 

[Sheep]

Sudowoodo because it's the tree Pokemon. (Should've seen that coming. :D)

 

[vanillte1]

trevennant cuz it's also a tree

 

[Sheep]

Tauros because its name starts with a T which is the first and last letter in Trevenant's name.

 

[dizzyshot]

Vulpix and Ninetales, like Tauros, both have multiple tales. Tauros with 3, Vulpix with 6, and Ninetales... well that's self explanatory.

 

[Lycanthropy]

Fire stone, the item needed to evolve Vulpix into Ninetales.

 

[vanillte1]

water stone cuz it's also an evolutionary stone

 

[Sheep]

Staryu because it evolves with the use of a water stone.

 

[dizzyshot]

Eevee because it can also use a water stone to evolve into Vaporeon.

 

[vanillte1]

ditto since it's also normal type

 

[Sheep]

Mew because it can also learn Transform (and is similar to Ditto in many other ways)!

 

[RuFF]

Celebi - It's the mew version of Gen II