Matthew Thomas Skiba is an American musician, singer and songwriter. He is best known as the co-lead vocalist and guitarist of the punk rock band Alkaline Trio, and served as the co-lead vocalist and guitarist of Blink-182 from 2015 to 2022. Skiba's lyrical content commonly involves dark romantic themes.

Daniel Michael Andriano is an American singer, songwriter and musician. He is best known as the co-lead vocalist and bassist of the punk rock band Alkaline Trio; though not a founding member, he has appeared on every studio album to date.