The Oscar winner is one of 25 members of the Academy of Motion Picture Arts and Sciences, of Asian descent, whose names feature on a letter sent to organisation officials, protesting a skit host Chris Rock introduced, during which three Asian children appeared onstage as Academy accountants.

The letter was delivered to the Academy Board of Governors, president Cheryl Boone Isaacs, CEO Dawn Hudson, and Oscar producers Reginald Hudlin and David Hill, according to The Hollywood Reporter.

It calls for "concrete steps" to "preclude such unconscious or outright bias and racism toward any group in future Oscars telecasts".

Oscar nominees Christine Choy, Rithy Panh and Renee Tajima-Pena, actress Sandra Oh and Star Trek favourite George Takei are also among the names on the list.

David Magdael, who is part of the Academy's public relations department and whose name also features in the letter, tells The Hollywood Reporter, "When that skit (about the accountants) came up in the middle of the Oscars, we all went like, 'What?' There was a collective, 'That didn't just happen'. We found a lot of people who said, 'We're not going to accept this sort of joke anymore'."

The letter reads in part: "We are writing as Academy members of Asian descent to express our complete surprise and disappointment with the targeting of Asians at the 88th Oscars telecast and its perpetuation of racist stereotypes.

"In light of criticism over #OscarsSoWhite, we were hopeful that the telecast would provide the Academy a way forward and the chance to present a spectacular example of inclusion and diversity. Instead, the Oscars show was marred by a tone-deaf approach to its portrayal of Asians."