I thought it'd be funny for Julius to have his initials be "J.J.J.". So I came up with his middle name being "Jovianos", which is a corruption of Jovian*. Jupiter is the largest planet in the solar system and Julius is pretty much the biggest thing in that eatery right now.
Seems that tigress has a thing for big fat blue jays, lucky for Jay. Unfortunately, he's regretting his middle name being known to her. Seems like a perfect middle name for a big eater like him though! The name Jupiter is from the Roman god of the king of all gods. Julius certainly eats like a king ^^.
*Jovian = of, or relating to the planet Jupiter.