Share your experience!
Hello @Kelryth and welcome to the forum!
Did this happen all of a sudden or was it after a specific action was performed? For example downloading an app. As @alexdon mentioned, can you post a screenshot of this? If the image of the man with the garden hose tap in his eye socket is on your lockscreen, are you able to change the lockscreen to another image?
Isn't that the old Valve logo?
Does the image disappear if you change your lockscreen background? Open an image in your album > Tap the three dots > Use as > Background for lockscreen. If there isn't any change after this, reboot your phone to safe mode. Has the lockscreen changed?
Quite strange, I agree. Glad to hear you where able to work it out though, let me know if there's anything else 