Katy Perry invites flak for being 'bully' on 'American Idol'

American Idol judge Katy Perry was under fire for his alleged bullying behaviour, as one of the contestant father called her out for unjust treatment against his daughter.

Wé Ani's father, Mac McDonald, directed his anger at the 38-year-old on Instagram.

"Several years ago, an impressionable teenager was in Chaplin Studios to record an Apple recording for her tenure on the Voice as the youngest minor finalist that year," adding, "She still had stars in her eyes as she became exhilarated by living a dream with her proximity to people she had only fantasized about."

He continued, "As fate would have it that impressionable teenager met her as a young adult on the American Idol stage. The young girl known as Wé McDonald now known as Wé Ani stood in front of someone who she had once idolized devastated her with an undeserved snarky response as a redirect to critiquing her show performance."

"It was a dagger in the heart given by a respected star with concern regarding any of Katy's subsequence responses regarding her American Idol performances. The star designation descended to a regular bully that attacked Wé Ani as a child. No acknowledgment or apology, just a collar pop and a shoulder brush. Remember this, lesson learned. See you at the Grammys," the 24-year-old's father concluded.

Previously, it was reported Perry mulled exiting the American Idol, as intense backlash grows from viewers on her alleged "rude" attitude.