Villain-fighting Power Rangers, a Batman in tights and horn-helmeted Vikings are roaming the halls and giant field house at Suffolk County Community College in Brentwood this weekend.

They’re among the attendees and panelists at I-CON, a science fiction, fantasy, comics, animé, gaming, and science and technology convention that has returned to Long Island after a five-year hiatus.

Discussions on “Star Trek” and “Doctor Who,” a “Hogwarts Open House” and a session on dressing like a mermaid were among the highlights.

The convention has grown since its 1982 inception — and since Dawn Henning, 42, of Islip, first attended as a 16-year-old in 1991.

Back then, the focus was on fantasy role-playing games like Dungeons and Dragons, and sci-fi movies like “Star Wars,” she said.

Will Weaver, of Manhattan, left, battles Eanraig MacEanraig, of Rocky Point, on Saturday, March 18, 2017, during the I-CON32 at Suffolk County Community College in Brentwood. Photo Credit: Ed Betz

“Now it’s science fiction, fantasy, gaming and animé all rolled into one,” Henning said. “There’s so much more to do.”

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Standing next to her was her 19-year-old daughter, Angela Henning, who was dressed as the Japanese animé character Asuna Yuuki and first came to ICON as an infant in her mom’s arms.

Angela Henning was waiting patiently for a man dressed as a Power Ranger to finish a conversation so she could snap a photo of him making his superhero moves.

“I’ve been watching Power Rangers since I was a kid,” she said with a smile.

Evan Hillel, 27, of West Babylon, is the man under the black-and-white Power Ranger costume and helmet. He’ll dress as Spider-Man on Sunday.

Jenna Childersley, a stage name, who declined to give her real name or town, molds pottery on Saturday, March 18, 2017, during the I-CON32 at Suffolk County Community College in Brentwood. Photo Credit: Ed Betz

“I just love being characters, and I love seeing kids’ reaction as their superheroes come to life,” he said. “I had that as a kid, and it’s great to give that to other children.”

Later Saturday, Hillel was scheduled to perform in a lightsaber training demonstration. Lightsabers are the lighted swords featured in the “Star Wars” movies.

It will be held in the same space where Eanraig MacEanraig and several others were demonstrating centuries-old European fencing that was used in duels to the death. Their blades were blunted, though.

“We don’t want to kill each other,” said MacEanraig, 53, of Rocky Point. “That would be bad.”

This weekend’s event is the 32nd I-CON, but the first since 2012. The 2013 convention was canceled by the nonprofit organizing group ICON Science Fiction, Inc., because of financial and staffing issues and renovations at its former venue.

This year, up to 3,000 visitors are expected before I-CON32 closes Sunday evening, said event chairwoman Katrina Lovett.