Easily one of the oddest heroes, and power sets, in the DCU, B'wana Beast is surprising a very capable hero, and has been shown in numerous DC show and properties.
B'wana is not only an expert tracker, but he can communicate with all animals. Not strange enough for you? Well, he can also merge animals together to make something...new. These new creatures take the best quaities of both animals for maxium "efficiency".
While this may seem odd (and disturbing), B'Wana Beast is truly good at making it work regardless of the situation. Arugably his most famous story was in Batman: The Brave and the Bold, where he literally sacrificed himself so that Starro would not take over the world. Batman was truly humbled by this, and they made statue of him in his honor.