Heaven is a shantien and Mecha's pet. She has silver skin, blue and green mane, tail, and ears, and blue eyes.
While in the Monster Hunter universe, the team comes across a fighting arena created by hunters. They infiltrate the arena by putting their own rescued beasts into the fights. They all only pretend to fight each other to give the others time to rescue the trapped beasts. Mecha rescues Heaven and she's grateful.
Heaven is shown to be very blunt and not easily impressed or amused, often staying silent even when others address her. However, her "whatever" attitude is shown to be mainly a front, and once she's opened up to someone, she is an admirable dragon with a brave heart, ready to enter a dangerous situation to defend her home. She is capable of working alone or in a group, and selflessly gives it her all.
She can generate ice, electricity, and fire.
Trivia:
Heaven gets her name from being a heavenly flying dragon.
She's the first beast from the battle arena to be introduced.