I can speak in a variety of authentic sounding accents, such as British, Cockney British, Posh (or High Class) British, Scottish, Irish, Latin American Mexican, German, American Southern, Creole, Asian-Indian Male, Canadian, Northern Minnesota (USA), Russian, Native American (Western Tribes), Australian, Japanese, Hood/Street Slang.
I can also do several impersonations such as Linda from Bob's Burgers, Squidward (SpongeBob SuqarePants), Smeagol (Gollum) from "Lord of the Rings," Sean Connery, "Henry" from the TV show "Punky Brewster," "Mickey" from Rocky movies, Sylvester Stallone, Gilbert Godfried, Christopher Walken, John Travolta, Tony Danza, Ed Sullivan, Shrek, Jimmy Stewart, among others.
Some Characterizations include: New York accented Old man, Old Yiddish Man/Woman, Ethnic Eastern European man, African American Thug/Gangster, Mexican Gang Member, American Indian Medicine Man, Young Dude/Surfer, Effeminate American Male, Effeminiate Male, Goofy/Nerdy American Male, with more available.
Some combinations of the above are also possible.