This character is clumsy or known to be prone to accidents.

A clumsy person is someone lacking in skill or physical coordination, who tends to be prone to more accidents then others.

Accident-proneness, also known as clumsiness, is the conception that some people might have predisposition, or that they might be more likely to suffer accidents, such as car crashes and industrial injuries, than other people. It may be used as a reason to deny any insurance on such individuals.