Rogue Screen on Nexus 6P

[L Dot]

Please help. This screen now appears whenever waking up my phone. I don't know how I got it, and can't figure out how to get rid of it.
Nexus 6P with Android 8.1 operating system.
Thanks!!

 

[B. Diddy]

Welcome to Android Central! That kind of sneaky "feature" is often hidden in certain apps (like "phone cleaner" apps). Uninstall apps one by one until the problem goes away.