Where was Pattern before Shallan drew him?
He was around. The bonding process had started when Shallan was young but then she pushed him away and he withdrew mostly to the Cognitive Realm until the bonding was started again and she pulled him fully into the Physical when she drew him.
If you are viewing this on github.io, you can see that this site is open source. Please do not try to improve this page. It is auto-generated by a python script. If you have suggestions for improvements, please start a discussion on the github repo or the Discord.