He has a son called David Hanna.
Hanna used to see himself more as a director rather than Barbera who was more into story development.
Hanna branched out into television and formed the company Shield Productions to partner with animator Jay Ward who had created the series Crusader Rabbit.
Hanna used to supply all the screams and yelps of Tom in the shorts without credit when he did Tom & Jerry.
The first cartoon Hanna did with Barbera was Puss Gets the Boot.
The first cartoon Hanna directed was To Spring.
Hanna's Middle Name Is Denby.