In terms of physical strength, ordinary Demon Lords and Great Devils are probably no match for Leon.
Even powerful Demon Lords and Great Devils like the Undying Demon Monarch Ocas, the Beast of Whispers Dimo Genesis, or Zarriel, the ruler of Aphnas, are not entirely beyond Leon's ability to contend with, though securing victory against them would undoubtedly pose quite a challenge.
As a Red Dragon, Leon's intelligence is without question, but intelligence and wisdom are two vastly different attributes.
The former refers to general cognitive abilities of a creature, including memory, observation, imagination, reasoning, and judgment. The latter, however, is a complex system composed of subsystems such as intelligence, knowledge, methods and skills, as well as concepts and ideologies.
