I love Spring Heeled Jack! Hes such an interesting cryptid, being so human. He also seems to project lots of rape/sexual assault fears- young women getting attacked by a man at night, only add in some super powers so he isn't "human". I almost wonder if this was started after a woman was sexually assaulted one night and the panic spread and exaggerated- fear of rape was probably a very big thing back in old London. It still is today! Hes a fascinating cultural icon, though I don't think hes an actual super human/alien jumping man by any means.