However, you might hear some more informal or humorous terms used in certain contexts, like:
* Lab rat: This refers to someone who works in a laboratory, but it's often used in a joking or self-deprecating way.
* Nerd: This is a general term for someone who is very knowledgeable or enthusiastic about a particular subject, and it can be used to describe a research scientist, especially if they are seen as being very focused on their work.
* Brain: This is a more informal and playful way to refer to someone who is intelligent or knowledgeable, and it can be used to describe a research scientist.
It's important to note that these terms may not always be appropriate or respectful, depending on the context and the individual's preference.