Gridknight is a mysterious armored hero in SSSS.Dynazenon, introduced as a powerful ally tied to the legacy of the Gridman universe. He appears as a stoic and highly capable fighter who aids the main cast against kaiju threats. In the series, he serves as both a mentor-like presence and a symbol of justice, often acting independently while supporting the team when needed. His identity and motivations are gradually revealed, adding intrigue to his role in the story.