If counting Mythicals; Victini
If not; Uhm....Suicune

Any type of legendary counts so don't worry about that. ^^

Mew is my favorite legendary pokemon. Actually have a story in the works about one. Wanna hear a bit about it?

Hmm sure, if you want to tell me. Go ahead and send a note.

Sure. I should warn you now though, there is a lot to tell.

Oh alright then, that's fine.

The first of many has been sent.

Question for Light: What do you hope to accomplish as a Rescue Pokemon?

Question for Coal: Favorite kind of prey?

As for your question... that's a tough one. XD

You know me, I'm fond of the Legendary Beasts... I'd still say that Lugia's right now my favorite Legendary, though.

Light: To help any pokemon in need of assistance and become a strong team like my parents were!

Coal: Hmm the ones who try to resist but end up submitting to my belly and become a willing little meal~ I hope that answers your question. :3

Lugia is also my all time favorite. If mascot legendaries aren't involved though then I'd say Suicune is my fav. ^^

Oh hey good to hear from you too! ^w^

Nice to hear from you again!

*Boops Light playfully*

As for favorite legendary, I think I'll go with good ol' 'quaza (Rayquaza) X3