The Commons' Hall was a building in Echidnaopolis on Angel Island, and served as a sort of community center for the city. It was also the site of a surprise birthday party held for the youngest Guardian, Knuckles the Echidna. In attendance were members of the Chaotix, Knuckles' parents Locke and Lara-Le, his future stepfather Wynmacher, and other guests. The hall was also the site of Knuckles' first real kiss with Julie-Su, the event serving as the real start of their romantic relationship. (KtE: #28)

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