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 Trajectory of Dawn in the World of Comics was a novel recommended to the goons who had been reborn into Gotham. This novel was written by the handsome dog Frank, and it told the story of a man who was reborn as a goon of Gotham and mistakenly entered an evil organization. Although the protagonist clearly wanted to walk towards the light, he was gradually shrouded in darkness. The whole world was trying to persuade him to become a supervillain, but he was still determined to turn the dark and chaotic era around and put the world back on track. This novel had an interesting setting and rich content. It was a novel worth reading.
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.