NBC’s hit-drama “Heroes” is auctioning artwork by renowned graphic illustrator Tim Sale exclusively on NBC.com with two separate auctions to begin on March 26 and April 2.

Each week’s auctions will feature two full-size autographed limited edition prints and drawings of artwork used in the show. The list of artwork includes “Exploding Man,” “Eclipse,” “Claire on the Stairs” and “Hiro and T-Rex.” Bidding will go live on March 26 at 6 p.m. (PT) and will close at 12 a.m. (PT) on March 28. The second auction will go live at 6 p.m. (PT) on April 2 and close at 12 a.m. (PT) on April 4.

All proceeds will benefit the Epilepsy Foundation.