There are at least three artists under this name:

1) Alternative / Experimental band from France
2) Canadian underground rapper
3) Brazilian trapper

1) Trunks was born with the astonish collaboration of Laetitia Shériff (bass), Régis Boulard (drums), Stéphane Fromentin (guitar), Régis Gautier (guitar) and Daniel Paboeuf (sax) and today enhanced with guitarist Florian Marzano, and likes to call itself nor a group nor a band, but more an artistic collaboration.
MySpace

2) Trunks is a Canadian underground rapper, and member of the Monsta Island Czars.
He first gained national exposure through MF DOOM's album Take Me To Your Leader on the track "Lockjaw". Although the track was a little over one minute long, it was recognized as one of the highlights of the album, and MF DOOM was so impressed he offered to produce Trunk's debut. This manifested in the form of the mixtape EP, MF Doom & Trunks Presents Unicron. It featured six tracks, including "Lockjaw", and was produced by DOOM in its entirety. The mixtape was released electronically on multiple websites, as well as being released on bootleg CD. However, this would be the last official release by Trunks for at least a year, as Trunks (like countless other DOOM proteges) slipped into obscurity after the release, ending his 15 minutes of fame. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.