Mike and Jack were the Secondary Mascots (the Primary being Yoda from the Star Wars series) for Vodafone from 2010 to 2013, they were Bees and were Best Friends.
they also had a Female Friend called Amy, who was first seen after Mike had found out that she was he and Jack's new neighbour, and so they became friends.
Mike and Jack were last seen in a Christmas Advert in 2013 in which Mike was looking for a gift for Amy and saw a poster for the Vodafone free Cinema Pass.