Unlike his older brother Brad, Tuck is suspicious of the unknown and likes to be surrounded by familiar things and faces. He has a whole assortment of hidden fears and anxieties (let's just say he's not a fan of ferris wheels!) At first, Tuck was terrified of Jenny too, but after an unplanned tag-along on a meteor-blasting mission he's become her biggest fan. Well, next to Brad. Despite his fears, Tuck insists on going along on Jenny and Brad's adventures. Though being the typical trouble-making little brother he is, he usually ends up doing more damage than good.