Nicholaus Arson

His main guitar, as he said in Premier Guitar:

This has been my main guitar. The Tele custom. This has been my main guitar for maybe...I don't know, a couple of years. (...) This one sounds really great. It has hot (bridge) pickup and all that...

His main and most recognizable guitar. 2021 Premier Guitar rig rundown describes the guitar as follows:

Similar to Carlstroem, guitar mate Nicholaus Arson travels light when Stateside. Again, his No. 1 is a 1970s Fender Telecaster Custom that has just its overwound (stock) bridge pickup wired up. The vintage Tele once belonged to frontman Howlin’ Pelle Almqvist, who generously sold it to Arson. Both his Ts take Ernie Ball Paradigm 2020 Power Slinkys (.011–.048). Arson’s main axe has suffered several splits—none more impressive (or worrisome) than the re-glued fault line running from the cutaway to the body’s bottom.

The only time Arson peformed with this guitar was for "Hate to say I told you so" music video.

In this picture from Get Loaded In The Park (Clapham Common London) - 24 August 2008 you can see Arson holding his custom-build Fano guitar.

Nicholaus Arson frequently uses a Fender Custom Telecaster Electric Guitar, as mentioned in Premier Guitar. He owns several of these guitars. A photograph taken at Eurockéennes 2007, available on Wikimedia, shows him with this instrument.

Another guitar of his which was used just for one video. He used this one in "Die, Alright" music video.

This guitar was custom made by Sundberg guitars for Nicholaus Arson. This guitar was seen in "Walk Idiot Walk" music video.

Sundberg Guitars also posted a message on their website that they won't make more "Arsonettes", as many people asked.

In Premier Guitar Hives's rig rundown, Arson also discusses this guitar, around 2:22 mark, he tells guitar's history. Year of making is around 2002. as he says in Premier Guitar interview. As of 2013. this guitar is having Lace Sensor pickup. 2021 Premier Guitar writes about the guitar:

His U.S. backup is this Sundberg The Arsonette that was designed by the guitarist. He aimed to make a crossbreed of a Telecaster and a Firebird by giving the single-cut a raised center block. (The neck still uses Fender-style, bolt-on construction.) The lone pickup is a Lace Sensor T-150 single-coil. The upper bout is chambered producing a deader, more-direct sound that Arson likens to a banjo or drum. He strives for a tone that is immediate and rhythmic, eschewing any sustain or lingering notes.

Nicholaus Arson on Premiere Guitar:

''And then I have this one wich is a custom Telecaster and this is like... this is just like a new one, but this one actually sounds really good and all and works... works well. There supposed to be like... guitars that stand up to, you know... I mean we've run over one of my guitars with a van once and it's like, it still kinda just plays. So I have a bunch of these but you know... Like this type of black Tele with a white um...(pickguard) But this one is a newer one, I have ones that are like built from like sixties parts and from some other things as well...''

You can see Nicholaus holding a black Fender Telecaster Cabronita in June 2013 at the Liseberg amusement park in Gothenburg, Sweden.

In this photo, one can see Arson playing a Gibson Firebird I.

''I have this one wich is a custom Telecaster. It's a new one but this sounds really good and all, and works... works well. They're supposed to be guitars that like stand up to, you know... we've run over a guitar with the band and it still kinda just plays...''

Nicholaus plays the guitar, as you can see in this Facebook Post from the Hives.

In this performance of 'Come on', Arson is playing a Guild Thunderbird in white. You can clearly see it at 0:37.