Steven Mandel is the brother of the celebrity Howard Michael Mandel who is a Canadian comedian, television personality, actor, and producer. Mandel voiced the character Gizmo in the 1984 film Gremlins and the 1990 sequel Gremlins 2: The New Batch. In 1987, Mandel starred alongside Amy Steel in the comedy film Walk Like a Man.
Howie Mandel siblings: Meet brother Steven Mandel
Steven Mandel is only known to be a brother to the Canadian comedian Howie Mandel. Little is only documented about him, but since the two are siblings, we believed like his famous brother, Steven was also born in Toronto and raised in the Willowdale area of Toronto, Ontario. He is Jewish, and his ancestors emigrated from Romania and Poland.
Steven is also a distant cousin of Israeli violinist Itzhak Perlman. His father was a lighting manufacturer and a real estate agent. His parents are Al Mendel his father and Evy Mandel his mother. He is the uncle to his brother’s children.
Source: Ghanafuo.com