Someone mentioned Paul with his kids - he hasn't actually played a part in raising any of his kids!
There was Leo and David, who he didn't know were his sons until they were adults.
Then there was Amy, who he fathered from an affair. The mother, Nina, asked Paul not to be involved, but Amy did later stay with him for a few months as a child before returning as an adult.
Then soon after was the triplets, Cameron, Robert and Elle, but their mother, Gail, moved away before they were born and we only occasionally hear a reference to Paul visiting them. We saw the two boys again as adults but I think Elle returned as a teenager, I'm sure she was briefly at Erinsborough High.
And then Andrew was born from Paul's marriage to Christina. When Andrew is still a baby they all move to Hawaii but Paul soon returns before he goes on the run to Brazil and Andrew eventually returns as an adult.