We know that Olivia is a big part of Purity's life, how big an influence is Frank to the twins? How do they feel about him? Does he ever consider them to be his pseudo-sons?
Frank is a sort of Father figure to the boys, but never really regarded as a Father, they call him 'Frank' or other silly pet names depending on the situation, while Lucky is a lot more receptive of Frank being a Father to them, Freddie is a little bit more iffy on the inside, not really feeling comfortable with Frank 'replacing' his real Father so tries to cause him as much trouble as he can.
Eventually it becomes a game of "who can make Frank react the biggest", and for the first year or so they drive him up the wall.
Frank regards them as sons of sorts, he treats them as he would if they were his boys, although they are a lot of trouble and run circles around him at the best of times. Two mischievous boys who are constantly running on the same trouble making wave length poses a few problems for the ageing man.
Really he sympathises for them rather than getting mad at them for being terrible, they have had a hard time with being discarded by their mother so he tries his best to raise them to be respectable young men and keep them out of trouble.
Despite their ins and outs, Frank is a rather big figure in their lives, and although they are troublesome and act like they don't want him in their lives, they are quick to run to him for advice when they are troubled or upset.
He's not so much an influence as he is a strong father figure for them.











