Michael Clifford, Aussie bae from 5 Seconds Of Summer is actually related to missing toddler William Tyrrell.
William's biological parents were officially named, due to a court decision, and his father Brendan shares the same father with Michael - Daryl Clifford.
This makes Mikey William's uncle.
Daily Mail Australia has reported that the Clifford family don't have much involvement in William's life, with not much connection to William's father who has served time in prison.
William was taken into foster care when he was nine months old.
Mikey has never made any public comments on his relation to this missing toddler, but since the family connection has just become public, he may say something.