Rent Double Dragon: Vol.2 (1993)

A animated TV series based on the first Double Dragon video game.

Over the Line
When the Shadowmaster tries to take over the EMF Monitoring Station at the Fusion Plant, Billy stumbles into the lethal EMF computer monitoring field and loses his memory. The Shadowmaster convinces Billy he is the Shadowmaster's son, and makes him the new Shadowboss.
The Price of Oblivion
The Shadowmaster invents a new drug called Oblivion and has his Shadow Warriors test market it in a local neighbourhood where Neil McReady, retired ex-army, has just moved. The drug is highly addictive and addicts roam the streets.