Stuart is a minion of many varied talents, but seems to serve specifically as one of Gru's infiltration specialists, and is handy with disguises and role-playing (not in the gaming sense) as well.  He has a tender side, however and, like Jerry, ends up making a pretty effective babysitter and playmate for Margo, Edith and Agnes.  He's also pretty darned addicted to video games!

In the minions darkest years, before they ever came to meet and work for Gru, Stuart teamed up with Kevin and Bob to set out in search of new and better opportunities for their brethren, as well as the biggest, baddest villain to serve...finding themselves briefly (and tumultuously) in the service of Scarlet Overkill, the greatest super villain of the late 1960s.  When he was younger, during his adventures with his fellow minions, he displayed a passion for playing guitar, and was a pretty fair musician.  Just don't put an electric guitar in his hands, or he may work himself up to a fever pitch, throwing out famous guitar riffs and then pulling a Pete Townshend-style stage move!

Above: Stuart, on stage in front of London's Buckingham Palace in 1968, absolutely shredding on an electric guitar, a gift from the United Kingdom in return for his part in defeating Scarlet Overkill and restoring Elizabeth II to the throne as rightful queen of the British Empire.