He is best known as a character actor, and for his starring roles in five popular children's television series Breakfast-a-Go-Go, The Lost Islands, Alexander Bunyip's Billabong, Watch This Space and Professor Poopsnagle's Steam Zeppelin.
Blanchard got his first big break on the small screen when he appeared on the children's variety show Breakfast-a-Go-Go in 1969 as 'Witless Wonder', the comedic sidekick of new host Sue Smith.
[1][2][3][4] He followed this with appearances on The Garry McDonald Show (1977), Alexander Bunyip's Billabong (1978),[5] Doctor Down Under (1979) and, most notably, co-starring with Paul Chubb in the children's science fiction series Watch This Space (1982).
He began to work more regularly during the early 1980s and had parts in the television movie Chase Through the Night (1983), miniseries The Last Bastion (1984) [6] and films Silver City (1984),[7] Warming Up (1985) and Burke & Wills (1985).
After a supporting role in the thriller film Dark Age (1987),[10] he returned to television acting with guest appearances in Mother and Son (1988), True Believers (1988) and G.P.