Definitely. Both the Riddler and Hush are familiar figures in comics. They have distinct characteristics and play significant roles in various comic story arcs.
The Riddler is a fascinating character in the Batman universe. His stories are full of mind - benders. One of the best riddler stories might be his first encounter with Batman. He challenges Batman with his complex riddles, which not only tests Batman's intelligence but also adds a unique flavor to the story.
It's not a straightforward yes or no. The Riddler's behavior regarding killing in the comics is inconsistent. Sometimes he's driven to extreme measures and takes lives, while in other instances, he refrains from outright murder and sticks to his intellectual challenges.
Penguin and Riddler are typically not friends. They often operate independently and may even compete or have conflicts with each other in the comic universe.
My favorite moment in Riddler stories is when he stumps Batman with a really tough riddle. It's that moment of tension, where Batman has to really think hard and the Riddler seems to have the upper hand.