Such roles/parts are called cameos, or cameo roles. Sometimes performers who specialize in smaller, lighter or supporting roles are called character actors.
The cast of Abramakabra - 1972 includes: Uwe Dallmeier as Various Roles Helga Feddersen as Various Roles Dieter Hallervorden as Various Roles
The cast of Baxter On... - 1964 includes: Stanley Baxter as Various Roles June Whitfield as Various Roles
The cast of Alivaltiosihteeri muistelee - 1993 includes: Pasi Heikura as Various Roles Jyrki Liikka as Various Roles Matti Toivonen as Various Roles
The cast of TV-Ansjosen - 1995 includes: Henrik Lykkegaard as Various Roles Niels Olsen as Various Roles Ulf Pilgaard as Various Roles Paprika Steen as Various roles
The cast of Jornalouco - 1992 includes: Humberto Bernardo as Various Roles Manuela Couto as Various Roles (1992-1993)
The cast of Abramakabra - 1972 includes: Uwe Dallmeier as Various Roles Helga Feddersen as Various Roles Dieter Hallervorden as Various Roles
The cast of Stykvis - 1974 includes: Otto Brandenburg as Various Roles Lars Knutzon as Various Roles Lone Lindorff as Various roles
The cast of The Telebugs - 1986 includes: Ron Moody as Various Roles Suzy Westerby as Various Roles
The cast of Baxter On... - 1964 includes: Stanley Baxter as Various Roles June Whitfield as Various Roles
The cast of Mosebryg - 1971 includes: Susanne Heinrich as Various roles Jesper Langberg as Various Roles Karin Nellemose as Various roles Lise Ringheim as Various roles
The cast of Satirica - 1993 includes: Donald Andersen as Various roles Kit Eichler as Various roles Henrik Koefoed as Various roles Birgitte Raaberg as Various roles
The cast of Klikk - 1984 includes: Lisbet Dahl as Various roles Kirsten Lehfeldt as Various roles Jens Okking as Various Roles Ulf Pilgaard as Various Roles Kurt Ravn as Various Roles
The cast of Egentlig - 1993 includes: Rune Andersen as Various Roles Minken Fosheim as Various roles Rigmor Galtung as Various roles Rune Gokstad as Various Roles Sigrid Huun as Various roles
Actors inevitably play the roles in Shakespeare's plays, although some roles nowadays are played by actresses. Sometimes these are professional actors who earn their money this way, and sometimes they are amateurs who have a different day job. Either way, people who are not in interested in acting rarely play Shakespeare's roles (or indeed any roles).
The cast of Beyond a Joke - 1972 includes: John Bird as Various Roles Eleanor Bron as Various roles Barrie Ingham as Various Roles
The cast of The MRBB Show - 2011 includes: Boris Bosilkov as Various Roles Callum Price as Various Roles Mina Radovic as Various Roles
The cast of Alivaltiosihteeri muistelee - 1993 includes: Pasi Heikura as Various Roles Jyrki Liikka as Various Roles Matti Toivonen as Various Roles