Events of L.A. Noire
He lives down the hall from Angel Maldonado and following Angel's arrest, Cole Phelps encounters him while canvassing the neighbors regarding anything they might have heard. David answers the door wearing a goblin mask and explains that he is divorced and has his kids over. When he put them to bed, he went to bed and didn't hear anything go on between Angel and Antonia Maldonado.
He answers the door in a scary mask and apologizes; he was playing with his children.