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This location exists primarily within the Sonic Boom continuity.
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Quotation1 Hey, you, with the scrawny little arms! Yeah, you! Think you have what it takes to be a beefcake like me? Then come on down to Knuckles' Upper-Body-Only Workout Center, 'cause nothing says cool like "mus-cools!" Quotation2
Knuckles the Echidna, "Where Have All The Sonics Gone?"

Knuckles' Upper-Body-Only Workout Center is a location that appears in the Sonic Boom television series. It is a workout center on Seaside Island owned by the fitness celebrity Knuckles the Echidna.


From what has been shown, Knuckles' Upper-Body-Only Workout Center is an outdoor workout center whose exercise equipment are hosted on the beach. As its name implies, it focuses solely on building up the muscles of the upper body.[1]


TV series


Owned by fitness celebrity Knuckles the Echidna, Knuckles' Upper-Body-Only Workout Center received recognizable advertisement through street signs and television commercials featuring Knuckles as the spokesperson and/or poster boy.[1]


  1. 1.0 1.1 Lachenaud, Marine; Lachenaud, Cedric (19 August 2017). "Where Have All The Sonics Gone?". Sonic Boom. Season 2. Episode 93. Boomerang.
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