What's your favourite Mythical Pokémon?

To be honest, I'm not sure what the difference between mythical and legendary Pokémon are. I just consider them the same thing. That being said, for Pokémon that are classified under the term 'mythical', my favorites would be Meloetta, Darkrai, and Jirachi. Shaymin's a cutie though!

 

Darkrai is my favorite, without question. He's just a misunderstood anti-hero.

 

Victini! It's just so adorable! And so strong, simple yet amazing design, not to mention great typing and symbolism. And who can't love that personality! I knew what it would act like before even seeing the movie, just by looking at a picture of it!

 

Jirachi, Celebi, and Mew are my top three... although I love all of them! They have such cute designs and I love how they are crazy strong too.

 

Keldeo-Keldeo's Resolute Form Design Is Way Too Awesome Plus You Should Watch The 'Kyurem Vs THe Sword Of Justice' Movie,Keldeo's Transform Into Resolute Form Scene Is Way Too Awesome To Represent Courage And Valor!
I Think I Should One Day Crossover Keldeo With 'Cassini' With The Fact That They Are Really Brave!

Shaymin-Oh Shaymin Is So Cute In Land Form,But Desgin Is Even Better In Sky Form.
And Like What @Cephei Said,IFall Into Love With Shaymin From The Movie.

Jirachi-I Love Stargrazing And Make Wishes,Jirachi Is The Perfect Blend Between The Two.
I Also Recently Crossover Jirachi With 'Cassini'.

Victini-Like Keldeo,Victini's Overall Appearence Turly capture Victini's Kind As A Victory Pokémon.
And I Have To Admit...Who Start To Like To Eat Macaroon/Macaron After Watching Victini Ate It Couple Times In The Movie?-I Did!
Plus Victini Got A Close Interaction With Reshiram In The Movie.

 

My favourite mythical? I'd have to go Mew. That powerful ancestor Pokémon, in a cute, pink, fluffy cat form.

 

Deoxys. All the freaking way. It's a DNA shapeshifting alien that fires lasers from a chest crystal. What's not to love? Also, spaghetti arms.

 

My two favorites are Mew and Victini, they are the cutest Pokémon I've ever seen and yet powerful at the same time.

 

Shaymin
it's just so freaking cute that everytime I see one I wish I could hug and cuddle it

 

Mew!! Also Jirachi but not quite as much as mew. But I'm a sucker for a starry theme! <3

 

DarkraiDarkraiDarkraiDarkrai... I'm not sure tbh. >_>

Nah it's definitely Darkrai, but for second place? It's a tie between Volcanion and Jirachi

 

My favorite is Manaphy. It's cute and it's one of the rare mythicals that can actually breed.

 

Going against the rest of the responses so far, my favorite Mythical is either Genesect or Arceus. They're both powerful (coughdownrightbrokencough) and I've got some fond memories of playing with them.

 

Mew and Celebi are my favorites. Mew is so cute and playful I just want to snuggle with it. Its also no slouch in a fight either. I like Celebi primarily because I like the time traveler idea. Having a Pokémon who travels through time in the Pokémon world fills my head with ideas.