Jules works as a paleontology professor at a university. He has always loved teaching so this was a natural step for him after years of studying. Beside teaching Jules does a lot of research, and often gets completely absorbed in his work and tends to fully ignore the outside world until he has finished whatever he is doing. When interrupted, Jules is absolutely furious and might throw something at the intruder. He prefers working alone, since according to him other people only mess up his thoughts and papers and make concentrating impossible. Nonetheless Jules is good at taking constructive criticism as long as he is the one asking for it. He hates when people try to meddle with his things or give him advice without permission.

Jules misses field work a lot, so he takes his students often to field trips. Students generally like his classes, but he can be a very strict teacher if he's having a bad day or if a student clearly isn't taking their studies seriously. Paleontology is almost sacred to Jules and he defends his views with his life.