Comedian Carlos Mencia just appeared in court for his felony tax case ... and he entered a not guilty plea to all 12 charges against him. Prosecutors say Carlos -- born Ned Arnel Holness -- failed to report $8.

Source: [TMZ](https://www.tmz.com/2026/06/22/carlos-mencia-pleads-not-guilty-felony-tax-fraud-case/)

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