Elvis Costello

In this photo of Elvis Costello performing you can clearly see a Green Rhino on his bottom right, next to the ernie ball volume pedal. And no, its not a swollen pickle. The swollen pickle is very un-Elvis and the color isn't bright enough green to be a pickle either.

On Pigtronix's artists section on their website, Elvis Costello is listed as using their Class A Boost pedal

In this photo of Elvis Costello performing live you can see an ernie ball VP jr volume pedal first in the chain on the far right of his pedalboard.

According to a Facebook post by Custom Audio Electronics, Elvis Costello's pedal rack includes the JHS Firefly, as shown in an image provided by the source.

According to a Facebook post by Custom Audio Electronics, Elvis Costello's pedal rack includes a Mr. Black Boost Tiger, which is visible in the top right corner of the image.

In a post by Custom Audio Electronics on Facebook, it is confirmed that Elvis Costello uses the Teisco Fuzz pedal, as it is shown in loop 1 of his effects rack.

Elvis Costello uses a modded Line 6 DL4 Delay Modeler in his effects rack, as detailed in a Facebook post by Custom Audio Electronics. The post explains that the DL4 was modified to be remotely controlled via switches on the CAE RST 8 foot controller for its looper functions, highlighting its integration within Costello's pedal setup.