translation.en: Dr. Gero is a brilliant but slightly mad scientist If you look very carefully, you see that his skull has been replaced with a transparent Plexiglas dome so that the workings of his brain can be observed and also controlled with light.
translation.zh: 里一个非常聪明但有点疯疯颠颠 的科学家。 如果你仔细观察， 你会发现他的脑壳被换成了一个 透明的有机玻璃圆顶盖子， 你可以透过盖子观察他的大脑活动 而且可以用光线去控制它。