Gobo Fraggle Gobo Fraggle is one of the five main Fraggles in " Fraggle Rock " . In Gobo ' s earliest appearances , he wore a yellow sweater with a purple cardigan . After the first twelve episodes , he would trade in this outfit for a yellow sweater with purple stripes and a brown vest . Gobo Fraggle is an explorer , just like his Uncle Traveling Matt . Whereas Matt explores Outer Space , Gobo devotes himself to the exploration of Fraggle Rock ' s many caverns and unchartered regions . Gobo is also the only Fraggle who is brave enough to go into Doc ' s Workshop to pick up his uncle ' s postcards while evading Doc ' s dog Sprocket . Whenever the Fraggles are in trouble , Gobo finds inspiration in these postcards . Personality and History . Gobo is adventurous , clever , and kind . Although he is a good leader , he has a tendency to be conceited and domineering on occasion . He shares a room with his best friend , Wembley Fraggle and is close friends with Red Fraggle . Gobo has an accomplished singing voice and plays the guitar . His dialogue is occasionally peppered with a Canadian - sounding " eh , " a likely reference to the show ' s being filmed in Canada . He is allergic to radish bars . In the first season , flashbacks of Gobo as a child , being raised by Uncle Traveling Matt , appeared in " " and " . " The young Gobo wore a yellow tank top with the same stripe pattern as his later sweater . In " , " Gobo ends up making himself known to Doc . Outside " Fraggle Rock " . In " A Muppet Family Christmas " , Gobo ( along with the other main Fraggles ) meets Kermit the Frog and Robin the Frog when they enter a Fraggle Hole in Ma Bear ' s house in Grizzly Farm . Later , during the Muppets ' carol medley , Gobo leads his friends into outer space to investigate . Gobo also appeared as part of the salute to Jim Henson on " The Television Academy Hall of Fame " in 1984 . Jerry Nelson reprised the role of Gobo for the " Just One Person " performance at Jim Henson ' s Memorial . Gobo appeared next to Wembley in the background of the same number in " The Muppets Celebrate Jim Henson " . In his first speaking performance in over 20 years , Gobo ( performed by John Tartaglia ) appeared in commercials promoting The Hub ' s " Fraggle Rock - A - Thon " in April 2013 . Gobo made similar live appearances at The Spare Room and the Museum of the Moving Image . Behind the Scenes . " " ( short for " go between " ) is a lighting term used in film , television and theater . In the context of the show , Gobo is named after his great - uncle Gobo , Traveling Matt ' s uncle . In the language of the ancient Fraggles , " Gobo " means " Take off your hat ! " Gobo was puppeteered by Steve Whitmire during the audition tapes . During the series announcement in Toronto , Jim Henson puppeteered an early build of Gobo . When the Gobo puppet was redesigned halfway through the first season of " Fraggle Rock " , it was changed to represent a more mature Gobo . For the first two episodes after his look significantly changed , he wore a hat , possibly to hide the fact that his hair was now shorter . Throughout the show ' s five seasons , occasionally he wears different hats . Sources . _ _ NOWYSIWYG _ _