Mark Hoppus started playing these specific types of Fender basses in 2016, due to being inspired by fellow bandmate Matt Skiba, who played Fender Jaguar guitars. These basses are unlike regular Fender American Standard Jaguar Basses, since their pickguards, pickup configurations, and wiring are all custom. The pickguards are custom-cut to accommodate the inverted neck pickup and one volume knob. There are no control switches on these basses for changing tones and frequencies, unlike the regular model.
The pickguard material covers where those switches on the regular model would be located. Plus, there is no metal control plate for where the volume and tone knobs go unlike the regular model, and the pickguard extends to where the metal control plate would be, therefore accommodating the volume knob and input jack. Despite the custom pickguards and pickup configurations, these basses share the exact same necks as the regular American Standard Jaguar Bass model, as they have rosewood fingerboards and block abalone inlays between frets.
Unlike all the Fender basses that Mark Hoppus has played throughout his career in blink-182 which only had neck pickups, these basses have both neck and bridge pickups. The first two Jaguar Basses on the left were painted by artists Greg “Craola” Simkins and Dabs Myla. The black bass, painted by Craola, has an artistic combination of bees and an octopus. The light blue bass, painted by Dabs Myla, consists of weird random icons that are painted with their artistic style.
Mark Hoppus had the electronics in these Jaguar Basses wired for volume to direct output without any tone. The single volume knob would allow both the neck and bridge pickups to have equal volume. Yet, not all of these basses have both neck and bridge pickups. The white road worn Jaguar Bass only has a neck pickup and no bridge pickup, therefore having the simple pickup configuration of a Precision Bass. Also, the pink Jaguar Bass on the far right does not have a chrome knurled volume knob unlike the other three basses, but rather a black heptagonal Jazz Bass volume knob.