Y/n

Her 'real' parents abandoned her because she had powers like morro but with the powers to control the weather.She was put in an orphanage and was later adopted by Midday and David Devourer.Tehy also found teh ninja's siblings so tehy allowed them to be apart of the devourers as members not their kids.
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Kai and Nya's siblings(2 sisters-Flare,Aqua and 2 brothers-Spark,Felix)

Their parents left them to take care of Kai and Nya.The decided to teach them how to run the blacksmith shop.They soon left Kai and Nya after they were ready.They said bye then left.They ended up running into the other ninja's siblings.
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Jay's siblings (sister-Lexie and brother- chip)

Jay,Ed and Edna were out in Ninjago while his sister and brother were in the junk yard.Their power activated and destroyed alot of the junk yard.They wrote a letter saying 'to Our parents,We got lightning powers and we destroyed the place.We have run away from you to find someone who can help us.We hope to see you again but we are can't promise it.From Lexie and Chip.' Tehy ran away from them and end up running into the other ninja's siblings.
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Cole's sister-Roxie

Once their mum died her dad didn't seem to care for her or Cole alot.She got angry because of school so she punched her wall.Her powers activated and destroyed the wall.Lucky Cole was out climbing a mountain.She wrote a note similar to Jay's siblings.It reads 'To Cole,I have powers and I broke the wall I'm scared so I am going to find someone who can help me.Hope to see you.From Roxie.' She runs away and runs into the other ninja's siblings.
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Zane's sister (treat each other like siblings but not actually siblings-Crystal)

She has been with Zane for a few months but she said to him that she must leave to train her powers.She secretly makes Zane forget who she is then leaves quickly.She goes to Ninjago and runs into the other ninja's siblings.