- "I came for science. I'm leaving 'cause of witches. Welcome to the new dark ages!"
- ―Julius Dell[src]
In 2024, Midtown School of Science and Technology organized a school trip to Europe in the summer for the students. Dell volunteered to lead the trip as a chaperone alongside fellow teacher Roger Harrington. When they boarded the airplane, Dell told Harrington that he would take the third shift as he took an Ambien so he could sleep on the flight. On the flight, Peter Parker sat in between Harrington and Dell.
When they arrived in Venice, Italy, Dell toured the Grand Canal with the class. Dell, Harrington, Brad Davis, and others grouped up by the closed Da Vinci museum and then witnessed the water illusion's attack, as well as an unknown superhero come to defeat it. Later, at the Hotel DeMatteis, Dell was very disappointed in Harrington's choice, which proved to be very low-end. Dell criticized Harrington for not researching the trip further before they actually went. That evening, Dell told Harrington that the attack on the Canal made him think of witches.
The next day, Harrington and Dell informed the students that they were redirected through Austria in order to get to Prague. They went on a bus driven by Dimitri Smerdyakov and stopped at a rest stop along the way. When Parker told the group that they were mountain goats outside, Dell looked out the window but couldn't see any.
After arriving in Prague, Dell and Harrington originally planned for the students to enjoy the Carnival of Lights, until their plans were once again disrupted. Harrington was provided opera tickets from an unknown person and gathered the students together in the hotel's lobby. When Dell and Harrington announced the change of plans, the students were very disappointed, except for Ned Leeds who expressed some interest. As they walked through the festivities to the opera house, Dell repeated to the students that it wasn't his fault that the plans changed. At the opera house, Dell sat with Harrington and the students for four hours.
After their trip was redirected again, Dell and Harrington went with the students to London and as they were headed to the bus stop, Davis told them about Parker's picture. After the group had left, Dell told Davis that were to be no more pictures taken in the bathroom. They then hopped on a bus headed to the London airport. However, they were stranded on the Tower Bridge and witnessed the elemental fusion illusion. Dell and Harrington led the group off the bridge and to safety. After it was revealed that it was an illusion, the group boarded an airplane at the London airport and returned to the United States of America landing at the Newark airport.
Julius Dell is a serious and reliable teacher who works along with his colleague Roger Harrington at the Midtown School of Science and Technology. When Peter Parker's class was to travel to Europe after they were resurrected from the Snap, Dell accompanied them along with Harrington as a chaperone. During the trip, he wanted to make the students feel happy and excited at the prospect of having new experiences, while not forgetting his love for science. He has also been shown to have some degree of interest in World of Warcraft and the NBA.
However, much like his colleague and the whole class under his supervision, Dell greatly dislikes perversion and voyeurism. After Brad Davis, one of the students under his charge, was revealed by fellow student Michelle Jones, or MJ, to have photographed fellow student Peter Parker half-naked with the Seamstress during their stop in Austria, Dell was not amused. Believing Davis to be a pervert, Dell warned him that taking pictures in the bathroom was not cool.
- In the comics, Hugh Del was one of Peter Parker's science teachers.
- Dell seems to be interested in World of Warcraft and the NBA.
Behind the Scenes
- The role of Julius Dell was written for J.B. Smoove partly because director Jon Watts along with writers Chris McKenna and Erik Sommers enjoyed his appearance alongside Tom Holland in an Audi commercial produced to promote Spider-Man: Homecoming.