Daniel-not Danielle is a friend of Cass, Max-Ernest, and Yo-yoji. He is African American, and his father might be in a romantic relationship with Cass`s mother. He likes comics, has dreadlocks, and is introduced in book 4, and he graduated from middle school in book 5. It is also shown he constantly notices his friends things: for example, Cass`s thing is that she`s a survivalist, Max-Ernest`s thing is that he is always talking about magic or jokes, and Yo-yoji`s is his sneaker collection and his talent for playing guitar.

Daniel desperately wants a "thing." He ends up getting jealous of Cass, Max-Ernest and Yo-Yoji and wishes he could be more like them. 

Daniel is a very nice kid, and personally, I think that he would be very good friends with Yo-Yoji. However, his best friend is Glob.