The ultimate badass "mythical" creature. As described in "Fantastic Beasts and Where to Find Them" by Newt Salamander:
"The manticore is a highly dangerous Greek beast with the head of a man. the body of a lion, and the tail of a scorpian. As dangerous as the Chimaera (a rare Greek monster with a lion's head, a goat's body, and a dragon's tail), and as rare, the manticore is reputed to croon softly as it devours its prey. Manticore skin repels almost all known charms and the sting causes instant death."
In the foreword of the book, Albus "FABULOUS" Dumbledore admits they are badass.
J.K. Rowling has mentioned this incredible beast several times throughout the Harry Potter series. For example, in Harry Potter and the Prisoner of Azkaban, the manticore is said to have escaped a trial because everyone was too scared to go near it.
The award winning movie "Manticore" (2005) is somewhat accurate in showing that the manticore is a badass creature, but it inaccurate in showing that the manticore can be destroyed.
All manticores are born into the super exclusive "BFC" led by two manticores living on Long Island, New York.
YOU BETTER HOPE TO GOD YOU NEVER CROSS A MANTICORE'S PATH. IT MAY BE THE LAST THING YOU EVER DO.