Simplify the following text for a Grade 8 native English-speaking person.
Original: The most popular types of tokusatsu include kaiju monster movies ( the Godzilla and Gamera film series ) , superhero TV serials ( the Kamen Rider and Metal Hero Series ) , and mecha dramas ( Giant Robo ) . Some tokusatsu television programs combine several of these subgenres ( the Ultraman and Super Sentai series ) .
Simplified: Some famous tokusatsu features include Godzilla , Kamen Rider , and Super Sentai .