In "Past A", Jack is a child playing by a fire pit with a Fire rune and an Air rune.
Jack says he will grow up to be a great druid, and will help the world by making it rain chocolate cakes and strawberry milk.
Past B
In "Past B", Jack is an adult and players find out he is not a druid but a wizard, and the founder of the Wizards' Guild.
He will tell you that he was taught magic by Misalionar, one of the first druids to inhabit Gielinor. Misalionar was a servant of Guthix during the First Age.
He must be able to draw power from his mind since fire strike needs a mind rune while he used fire strike without using one.
Jack is also the founder of the Wizards' Guild. This is said when you help Jack and go back to talk to him in the Part B section of Time. see the image of the chat for evidence. The inspiration of which he talks of is you (your character) for talking to him in Part A.
Although Jack appears to be knocked back while experimenting with his runes his yellow dot on the map does not move.File:Jack (from M.Hist.) founder copy.pngJack saying he is the founder of the Wizards' Guild.