The Robins have returned to the Super League after a year away from the top flight and Johnson is determined to make a name for himself.
While at former club Huddersfield Giants, Johnson made 30 appearances across four campaigns in Super League but he is now targeting a regular run of games.
The 23-year-old knows he faces a tough fight throughout the campaign but after signing a new contract he is out to impress coach Tim Sheens.
He told the Hull Daily Mail: "When the season finished, we already knew that we had a strong squad to challenge Super League sides. But with the people we’re bringing in – and continuing to recruit – I just think it makes it even more difficult for everyone to cement a starting spot in the 13.
"Everyone really has to impress and I’m no different. In fact I feel I’ve got a point to prove, more than when I first joined.
"I’m just happy that I got the new contract sorted before my surgery.
"I’ve loved the way I’ve been treated since I’ve arrived and I credit Tim for a lot. He brought me to the club and has given me a lot of confidence back in my game. From when I left Huddersfield, and signed for (NRL feeder side) Redcliffe Dolphins, it’s all gone so fast. But I’m really happy with how things have worked out and I feel I deserve to be back in Super League."