I have a few from the fifth generation that I really like.
Terrakion- The Musketeers are easily my favorite group of legendaries of any generation but Terrakion stands out to me. He is just so awesome looking.
Carracosta- Honestly, might be a weird reason, but I love its name. It flows so well.
Zebstrika- Zebras are my favorite animal.
Braviary- Love its name too and I really love its design.
LOOKING FOR A SHINY ONIX/STEELIX and SHINY SCYTHER/SCIZOR and SHINY SLOWPOKE. I HAVE POKEBANK CELEBI FOR TRADE AND SOME OTHER SHINIES. PM IF INTERESTED.