Kim Hoseong, who performs under the name J.J Hassan (Korean stage name: 핫산), is a member of the Korean act Sultan of the Disco, where he contributes as a backup vocalist, rapper, dancer, and keyboardist.
No further verified information — discography, chart history, debut details, awards, or career narrative — is available in the provided material.
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Expanding this profile further would require inventing details not present in the source material, which falls outside K-Pop!t editorial standards. If additional verified information about J.J Hassan and Sultan of the Disco is available, the profile can be developed into a full narrative covering the group's formation, musical output, and career trajectory.
