Darmanitan or Heatran? They're both nearly identical.
Hihi wins this one with a Scarf and Earthquake to Heatran's face.
I prefer Heatran's design and stats.
Heatran's a legendary.
Hihidaruma is either pure fire or Fire/Psychic depending on it's form. It has a great hp stat, but it's defenses are worthless, it's attack is crazy high, and it's speed is pretty decent.
Yes they share a type, but they are in no way identical.
Also I went with Hihidaruma.
Heatran for me, it looks better and has better stats