'Be a Hero:' Jason Momoa continues to plead with fans to become donors to Be The Match Registry

Marco Provvisionato/Keystone Press Agency/www.globallookpress.com

Jason Momoa calls on his fans to make a change.

Jason Momoa, 42, shared in social media a video in which he pled with his followers once more to become potential donors to the Be The Match Registry, a national marrow donor program, amid his friend Travis Snyder's cancer battle.

"As you've seen lately, I've been talking about my friend Travis who has been fighting cancer for a third time, and how important it is that we raise the stem cell registry for him and the thousands of others who need matches."

"We can all make a change together. Please join the registry. All you have to do is swab your cheek and save someone's life. Be a hero — a real hero," he said and also thanked everyone who involved.