Hooktail Jr is the son of Hooktail of Hooktail's castle in Petal Meadows he was born with a rare condition and that is being born short or vary small as a baby dragon while other dragons are born big which is normal for dragons Hooktail Jr on the other hand can't he can only grow about the size of an adult Koopa when he gets older while other dragons grow to be the size of a house, building or even the size of a mountain but don't let his small appearance fool you for not only is he born small but he also has a very rare ability to master all elements that no dragon can possibly do he is what they call a Tri Dragon a legendary dragon that can be heard from an ancient prophecy that one day a dragon will be born with the power to master all elements and that he will be known as king of all dragons but when the dragon king Kronos found out what Hooktail Jr was capable of he fears that one day he will become to powerful and will eventually dethrone him and ruin his plans to take over the world so he separated both Hooktail and her son Jr never to see each other again while Hooktail is to remain in her castle in Petal Meadows for the rest of her days Hooktail Jr was to remain in a remote island were no one will ever teach him the abilitys for if he does he will eventually become stronger overtime he was trapped there ever since. Despite being stranded in the island at a young age even as a baby he was determined and eventually after many years and attempts to escape the island he succeeded and can only think of one thing after the escape and that is to return home to his mother. He eventually meets a toad who is known as The Master ( from paper Mario ) who is known to master the way of the jump ( which is all of Mario's moves ) as The Master found him the the middle of the ocean he took him under his care and eventually trained him to master the way of the jump. After three years of training Hooktail has mastered all the Mario's moves and eventually said his goodbyes to The Master and was one his long journey home only to find out that he was to late for his mother Hootail died a few years ago now nothing but a giant skeleton of herself witch lead him to a depressive state without realizing what was going on he was captured by a group of Bowser's minions and was taken to Darkland and was locked up in a dungeon but it wasn't long until Kronos made his move to invade Bowser's castle and succeeded all of Bowser's kid's the koopalings including Bowser Jr was captured after the defeat of Bowser and was taken away to different locations to be imprisoned by Kronos's minions who are the dragon guardians Draggadon, Fracktail, Gobblegut, Aeolus, Aqua Scales, Frostbite and Mabuz. After Bowser and his minions we're taken away Draggadon was left in charge of taken over Bowser's castle meanwhile both Larry Koopa and Bowser Jr we're locked up in there own dungeon guarded by Kronos's other minions known as the Rexes. Bowser Jr happen to be locked up with Hooktail Jr with him but Hooktail Jr recognized the two rexes that put him in that island a long time ago witch fuelled him with rage and manage to escape freeing both Bowser Jr and Larry Koopa in the process he teamed up with them and formed a plan to defeat Draggadon and eventually defeated him and took his power known as the orb of inferno with greatly enhance his power giving him the ability to breathe fire and to perform a double jump and glide with his flaming elemental wing's. Hooktail Jr swore revenge on Kronos for losing his mother but if he's going to defeat him he will have to defeat all of the guardians and steal there power to get strong enough to defeat Kronos and become the new king of all dragons and so Hooktail Jr join forces with the koopas to not only defeat them but to rescue the other koopalings as well including the king of koopas himself Bowser.