⚠️ SPOILER ALERT ⚠️
Some people were confused about the two great demons' flash back (demon baby or adult) appearance and time line of past events which includes them. So, I thought I help explain it as best as I can.
ZYZ's Demon appearance as a baby: Fully white braided hair. Wears black clothes. Can have demon face marks on cheeks. Can use his signature demonic powers as baby. But not as powerful as fully grown demon. Reference: when LL appeared as a baby tree to fight WZ his hair were short, had face demon marks, could use his wines and signature demonic powers.
ZYZ's Demon appearance as an adult: fully grown long black hair with white streaks. He is surrounded by red demonic aura. Red nails and red eyes with his signature demon markings on his cheeks. He can change his red demon aura, markings, red nails and change his hairs to white braided hair at will to adjust to look more like human as not to scare them. He appeared in human world with white braided hair with white clothes always; until his true demonic appearance was exposed to the human world for the first time (he went on human killing spree at demon hunting bureau on the red moon day). So he appeared with more of his true demonic appearance when he first met ZYC. He never bothered looking too human like later ever since the red moon day.
LL demon appearance as an adult: long black hair and he has signature demon markings on his forehead. Dark blue demonic aura, is able to used wines as a weapon, he is able to posses/use people and create illusions in his homeland. He has truth eye which was given to him by ZYZ. He used to often shorten his black hair, remove his forehead marking to look more like humans when in human domain until he fell out with ZYZ he stopped bothering to look more like human. He very often appeared in his demonic form or possessed people later.
[In HMH's farewell vlog he said he had the option of walking in human world with white braided hair and he liked white hair at first during appearance discussions but later he strongly went with his long black hair with white streaks. So he could have met the team with white braided hair if he went with this look]
💫Scene: where Yinglie's grandpa is beating baby ZYZ with white long braided hair ( just learned to change in to human form) with a stick for going down the mountain to get walnuts > atleast 100 years old (Li lLun with small ponytail black hairs, is a baby 👶 demon too) 34,000 years ago approx
💫Scene: where ZYZ and Li Lun ( in black robes) play with fans is one of their first adventurous trips to human world, they are more like teenagers grown up enough for the grand pa not being concerned about their safety anymore and letting them explore the world.
💫Scene: where ZYZ and LiLun with long hairs and front open tops, they are running towards the wilderness stone and both put their hands on the stone and take an oath to protect the wilderness as 2 most powerful demons living there. This happened when they have grown up (not teenagers anymore). Their actual demon hair are long black with ZYZ having white streaks. Around that time ZYZ had given LiLun drum toy as a gift in the human world.
💫Scene: love-hate events between evil doctor WZ and dragon princess happens. WX's real dad is killed and she is taken in by the her Goddess Master.
Major past event 1
💫 Scene: where ZYZ (white braided hair) and LiLun have short black hair both in white clothes in order to look more like humans, they are not in their demon appearance with black long hair and demon clothes. Li Lun has given ZYZ umbrella as a gift and used the money grand pa gave them. Also they had a playful fight in human world where they had a tie. Then it rained and they ended up going to Evil doctor WZ clinic where they discovered humans harming demons. ZYZ and Li Lun fell out of friendship over Li Lun killing humans indescrimately ZYZ absorbed everburning wood and while stopping Li Lun unknowing sets him up for slow painful death because Li Lun is a pagoda tree. LL has started to hate ZYZ for siding with humans and hurting him with fire for humans. They never had any chance to talk things out and make up and understand each other.
This event happened few years before ZYZ imprisoned Li Lun with the help of WX's master, killed WX's master and killed ZYC dad and brother in one go and also absorbed the half baize token not knowingly on red moon day.
Major past event 2
💫 Scene: where goddess tells ZYZ that she needs to punish and seal LL in order to stop him from killing humans indescrimately but more importantly he is going to turn into ashes due to everburning wood 🔥. By sealing him at his birth place with the baize seal will freeze the fire from burning him into ashes. However, when LL is sealed, ZYZ emotions go out of control on top of that red moon makes him loose control of his conscience. He is controlled by malicious energy he kills WX's master, ZYC's dad and hiscbrother and many others. ZYZ Grabs half of the baize token which helps him to regain little consciousness so he heads to the wilderness stone to regain his complete consciousness. He realises he has killed and so he is struck with grief and guilt. He looks after WX in the wilderness until he drops her off to the bureau and seals himself in house for 8 years. Every year he punishes himself for this killing incident. BJ mom turns into a tree at this time too. > this happened 8 years before he reappeared at bureau to make a team.
SonaLove:
