Actor Connor Trinneer passed away after a 5-year fight with ALS, a neurodegenerative disease.

• He publicly shared his diagnosis with PEOPLE magazine in 2020.

• Despite his illness, Mitchell continued to act, appearing in "Star Trek: Discovery" and "Star Trek: Lower Decks."

• He was also known for roles in "Jericho," "The Astronaut Wives Club," "Miracle," and "Captain Marvel."

• Beyond acting, Mitchell was remembered for his adventurous spirit, love of nature and cats, and devotion to his family.

• He is survived by his parents, wife, and two children.

• Mitchell requested donations be made to ALS research or his children.

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