Complex sentence: After the death of mutant fashion designer Jumbo Carnation, Radian joined the Omega Gang, led by fellow student Quentin Quire, who is also known as Kid Omega.
Split into simpler sentences: After the death of mutant fashion designer Jumbo Carnation, Radian joins the Omega Gang. This group is led by fellow student Quentin Quire, who is also known as Kid Omega.