The consistent form of the Warriors' starting forward pack and the emergence of boom interchange front-rowers Sam Lisone and Albert Vete meant Gubb had to be patient in waiting for another chance in the NRL this season.
Despite being one of the better performers in a powerful NSW Cup side stacked full of players with NRL experience, he found himself on the outer, while other middle men were rewarded with time in the top grade.
"No one really wants to be playing NSW Cup, everyone wants to be playing NRL," he said.
"And everyone in that team has the attributes to be the next man called up so it is hard.
"There was me, Sam Rapira, Suaia Matagi, Sebastine Ikahihifo and Sione Lousi, it was just a big log-jam. Everyone's got people in their ear saying 'you need to do this, you need to do that' so it is kind of stressful even though you are doing what you love.
"But it's hard battling away in NSW Cup, trying to stay focused on what you have to do to get into the NRL team."
He needn't have worried; he eventually earned a bench spot for games against the Roosters and Titans before really making his mark with a bruising 27-minute display in last week's win over the Raiders.
His rib-rattling shot on Canberra prop Frank-Paul Nu'uausala set the Twittersphere ablaze with fans quick to pair the #GubbCity hashtag together with memes commemorating the powerful tackle.
Gubb acknowledges the strength of his defensive game and says he has been keen to prove he is more than just another fringe first grader.
"I know that I've earned it this year. I've got back into my best footy that I know a lot of people haven't seen.
"It's my defence. Out of the club, I can bang the hardest. Ben Matulino's probably got the biggest shoulder charge but apart from him I've got that intent that no one else has.
"I might not break the line but my defence is probably my X-factor."
And while he's been making a big impression in recent weeks, Gubb is not likely to get ahead of himself any time soon.
The unassuming Wellington-born product can often be spotted walking home after Warriors training sessions and revealed he is too shy to ask his teammates for a ride.
It's that kind of humble attitude that sees Gubb considering teaching or social work as a career path post-football.
"I've never been really good at essay-writing but feel that I am good at teaching and being with kids, taking charge of a classroom.
"Going in that direction is something I want to do after footy, whether it is guidance counselling or whatever. We'll see what happens."
Charlie Gubb
Born: May 17, 1990
Height: 1.88m
Weight: 108kg
Position: Prop
Representative honours: Queensland Residents (2012)
Junior club: Victoria University Hunters
Previous clubs: Wynnum Manly Seagulls
NRL debut: Warriors v Rabbitohs, nib Stadium, Perth, June 7, 2013 (round 17)