It is vividly described in the novel "Legend of Gargoyle". It is said that Gargoyle is a kind of creature guarding the door and protecting the Holy Spirit. It is not evil, but it will drive away the existence of any just and evil forces. Gargoyle is only a kind of guardian creature.
"Invincible hero" series of games in the shape of a demon or bat like mobile statue monster, can fly. From the first generation to the fifth generation is the last generation. The first and second generation of Gargoyle are very good units in the early stage. Although the attack power is not high and there is no upgrade mode, the rare high defense and reasonable life value of level 2 creatures make them difficult to be eliminated.
Source: @ceccoart