The stars of Supernatural are thanking a longtime fan and health worker for his efforts during the current coronavirus (COVID-19) pandemic.Nurse Eric Thayer recently posted a picture of himself on Twitter wearing a surgical mask inscribed with a pentagram, a common mystical symbol in the world of Supernatural. This prompted a response from Padalecki and Collins.RELATED: Supernatural Star Takes His Social Distancing to the 'Next Level'

"Can you check the lore and tell me if this protects against demons AND COVID?" Thayer asked, tagging Collins, Padalecki and their mutual co-star Jensen Ackles.

"We'll fight the demons. You fight the COVID." Collins responded. "Thank you for protecting us. We will always be grateful."

"One of us plays a hero and one of us is a hero," Padalecki added. "From the bottom of our hearts, thank you for holding the line."

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Padalecki plays Sam Winchester, a college student turned demon hunter. Alongside his brother Dean (Ackles) he travels the country battling demons, monsters and angels. Collins portrays Castiel, a fallen angel of God. The series is one of the longest-running and most popular television programs in recent history, gaining a strong fan following from individuals like Thayer.

Airing on The CW, the final season of Supernatural stars Jensen Ackles, Jared Padalecki, Misha Collins and Alexander Calvert.