The upcoming Paramount+ drama series Happy Face has found all of its series regulars and jonesed for its recurring talk show host and Melissa’s boss. The final series regulars found are  Khiyla Aynne   and Benjamin Mackey, while Supergirl alum David Harewood is racking in the ratings. As one could surmise, Aynne and Mackey play Melissa (played by Annaleigh Ashford )’s kids with husband Ben, played by James Wolk . Specifically, Aynne  plays Hazel, their  secure and happy  15-year-old daughter who initially believes that her mother is off on a simple business trip. However,  she soon starts suspecting that something dire is going on, beginning to investigate and uncover the shocking circumstances of her mother’s past.  Mackey plays  lively   9-year-old Max, who takes his stable upbringing for granted and doesn’t grow his older sister’s suspicions regarding mom’s sudden absence. He instead steadfastly believes she’s producing some sort of on-location segment for  The Dr. Greg Show . A