The 20-year-old, who lives on the Gold Coast and qualifies to play for Wales through his grandmother, met the squad at the team hotel in Brisbane on arrival on Thursday.
"It's pretty good to put faces to names," Ralph said.
"I've been talking for a few years now to the staff.
"It's good to finally be here and get to see all of the boys.
"For my family, it's a really big thing for them and it's an honour.
"The first day was good.
"I didn't actually know anyone, but I got in and the boys have made me feel really welcome.
"It's good to get to know them. They've told me a bit about their culture and I've told them a bit about mine."
Living in a rugby league hotbed, Rugby League World Cup 2017 has been on his mind for a while.
"There's been heaps of talk about the World Cup and heaps of advertisement," he said.
"When you're driving around, you see big banners for the World Cup.
"Rugby league is massive here so the World Cup is going to be exactly that."
Wales Rugby League | @WalesRugbyL
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