Shannon Bunt donned a Superman costume and rode in Sunday's Convoy to honour his late brother Cory.
"We're riding for my little brother today, who passed away from brain cancer last year," the Warilla man, 40, said.
"I like Superman, and my little brother, he was a hero to me, with everything that he went through.
"He was never down on life, he was always happy.
"Before he passed he saw me (dressed) as Superman... He told me to ride in Convoy last year as Superman, and he's back again this year.
"I'll probably be Superman every year now."
Cory died aged 33; his brother described Sunday as an "emotional day".
Mr Bunt rode a motorbike in Sunday's Convoy, and was joined by family and friends.
"It was a big thing that he did, he actually raised money for Convoy himself for the kids, and made a lot of donations for the kids, even though he had the brain cancers," Mr Bunt said.
"He loved the trucks and the bikes, but mainly he loved fundraising for the cause, for the kids.
"The amount of people who support Convoy, it's just growing and the money that's being raised is great."
Meanwhile, members of 'Team Dandaloo' were also getting into the Convoy spirit on Sunday.
Team Dandaloo donated $280,000 as part of the auction for lead truck in the Convoy.
Amanda Puckeridge and daughters Mahalia, 12, and Taya, 10, were among the team members on the day.
Taya was enjoying her third Convoy, and said her favourite part was "seeing all the trucks and the motorbikes".
"Hopefully everyone raises a lot of money today," she told the Mercury.
Since its inception, the Illawarra Convoy has been an important day for True Ross and her family.
However, the 2018 edition was even more memorable, as her partner Jason Sawrey proposed on the morning of the Convoy.
A year on, Mr Sawrey said getting engaged at Convoy made the annual fundraiser even more special.
The couple will be getting married in March next year.
"Things are great... we're still happy," he said.
Ms Ross is the daughter of Ross Transport owner Alan Ross.
She works there as an office manager, while Mr Sawrey is one of their drivers.
A source of inspiration for the Ross Transport crew at this year's Convoy was Chayse Gannon.
Chayse, from Bega, was diagnosed with acute lymphoblastic leukaemia in February this year.
"He's three-and-a-half years old, and he's gone into a maintenance stage of remission," Mr Sawrey said.
"He couldn't make it today, but he's truck mad."