He began his comedy career at 18 years old after attending the National Youth Drama School in the Hawkes Bay, he had originally signed up for an improv class but ended up attending a stand up class instead.
[1] Crellin is mostly known for his dark stand up that addresses social-political and taboo topics,[2] he has been described as being “like a cross between Lenny Bruce and Dennis Leary with an angry smart guy vibe that is all his own".
[6] In 2009, Crellin won the 3rd edition of Radio New Zealand’s Stand up and be counted in which competitors were taken to a random location a few hours before the live show, then they wrote 6 minutes of comedy material based on the location.
[7] Also in 2009, Crellin was nominated for the New Zealand Comedy Guild Awards Andrew Kovacevich memorial cup.
In Europe Benjamin performed as a guest comedian on the Dutch television show Raymond is Laat.