Jodd was a male hare in the Mossflower squirrel crew of Redfarl and assisted in deflecting Swartt Sixclaw away from Redwall Abbey with them. He was found lost in Mossflower and joined up with them, wanting to be a squirrel. Due to this, his title throughout the book was the 'Squirrelhare'. Most of his full name is Wilthurio Longbarrow Sackfirth Toxophola Fedlric Fritillary Wilfrand Hurdleframe Longarrow Leawelt Pugnacio Cinnabar Hillwether. He protected Sister Withe from Veil when he attempted to attack her.
Later, he married Fleetrunn and took up residence at Redwall Abbey. He was known to use arrows the size of javelins.
In Redwall.org's Ask Brian, Volume 2, Brian Jacques says that to finish Jodd's full name, "add Jodrellio." This would make his name Wilthurio Longbarrow Sackfirth Toxophola Fedlric Fritillary Wilfrand Hurdleframe Longarrow Leawelt Pugnacio Cinnabar Hillwether Jodrellio.
The part "Toxophola" in Jodd's name likely hints at a book called "Toxophilus", the first book about archery (and longbow archery in specific) in England, published in 1545. Toxophilus means "a lover of the bows."