Blight

Derek Powers is a fictional character that appears in the Batman Beyond (1999-2001) animated series, voiced by Sherman Howard.

Fictional character biography
Derek Powers is a corrupt businessman who managed to gain control over Wayne Enterprises (now called Wayne-Powers) due to an elderly Bruce Wayne's poor health. When Powers develops a lethal mutagenic nerve gas and intends to sell it as weapon, one of his employees, Warren McGinnis, discovers evidence of the gas, and Powers has him murdered, causing the vengeful son Terry McGinnis to become Batman, who stops Powers' plans and exposes him to the gas; Powers is subjected to extreme radiation exposure to save his life, but as a side effect, his entire body becomes radioactive, rendering him translucent. He is able to hide his state and contain his radiation with a special cosmetic skin that, over time, flakes off. The cosmetic skin begins to last less as his temper becomes more and more uncontrolled and his radiation levels keep rising. He first introduces himself as Blight when he attacks Mr. Freeze. A scientist working for Powers had the idea that by using Powers baseline DNA, she could create a new body for him unaffected by his condition, then transfer him into the new body. To test this procedure, Mr. Freeze was used as, like Powers, his DNA had been corrupted by a condition. At first the procedure seemed like a success, until his condition started to resurface. Powers believed a biopsy of his organs may show why the procedure failed, and orders the scientist behind the procedure (who had been feigning romantic feelings for Freeze) to kill Freeze. He escapes and later returns to Wayne Powers in a suit he had "kept in cold storage" and freezes Powers and the scientist. Powers survives the attack by melting off his skin and the ice. He attacks Batman and Freeze, and when asked by Batman who he is, refers to himself as Blight, because he is blight on the land because of his powers. Freeze jetisons him from the battle. Powers decides to withdraw from public life, and summons his estranged son, Paxton, to run his business. However, Paxton betrays his father, and exposes him to the world as Blight. Powers hides himself at a nuclear submarine, where Paxton uses a device to usurp Powers' radiation, nearly killing him, but Batman intervenes. Powers then goes berserk with massive radiation bursts that sinks the submarine with him inside. An exchange between Batman and Paxton hints that Powers may have survived.

Blight also makes several appearances in the comic book series based on Batman Beyond.

In Batman Adventures #15, a character named Warren Powers originally appeared as head of Powers Technology. As a sort of prequel to the Batman Beyond episode, "Meltdown", Warren would have been shown acquiring the head of Mr. Freeze and locking it away in his vault, believing it holds the secrets of immortality. It has been confirmed that Warren is the father of Derek.