Robert Arryn is a character from the fantasy series A Song of Ice and Fire by George R.R. Martin and its television adaptation, Game of Thrones. He is the only son of Lysa Arryn and Peter Baelish, also known as Littlefinger. Robert is a sickly child, often portrayed as frail and weak, which affects his ability to rule the Vale of Arryn. Due to his young age and health issues, Robert is largely influenced by the adults around him, particularly his mother. He resides in the Eyrie, a castle known for its high altitude and impregnable defenses. His character represents the challenges of leadership in a turbulent political landscape.