In August 2010, guitarist Mikko Lindström got engaged to Toni-Marie Iommi, daughter of Black Sabbath guitarist Tony Iommi.

Ville Valo suffers from significant damage to his ear drum that causes his ears to ring. Valo has made mention of the fact that he uses alcohol and, in the past, other drugs to numb the effects of the constant ringing in his head.

Ville Valo smokes about 60 cigarettes a day (around 21,900 a year) to give his voice a gruff, husky edge.

Villa Valo learned to walk with the help of the family dog Sami, and when the dog died, not only was he extremely upset, he also apparently developed his allergies to animals and asthma at the same time. His asthma has become a big part of his sound on stage, giving him the sighing sound at the end of each sentence.

Ville Valo has a number of tattoos, including a pair of Edgar Allan Poe's eyes on his shoulder blades.

Ville Valo makes a very small appearance in Jackass: Number Two.

Bam Margera's character in the 2003 movie Haggard is named after Ville Valo.

Apart from working with HIM, and side-project Daniel Lioneye, Valo has kept busy in the music world, collaborating with many artists over the years. He contributed guest vocals for The 69 Eyes, on Apocalyptica's album Apocalyptica for the song "Bittersweet" (with The Rasmus' singer Lauri Ylönen), on The Bloodhound Gang's Hefty Fine for the song "Something Diabolical", and on Cradle Of Filth's Thornography for the song "The Byronic Man". In 2007 he duetted with Polish/German actress Natalia Avelon for a cover of Nancy Sinatra and Lee Hazlewood's song "Summer Wine", part of the Das Wilde Leben soundtrack. A video featuring both was recorded as well.

When "Razorblade Romance" was re-released and put into stores in the United States, HIM was not allowed to use their name for sales in the country because another American band owned the rights to that name. Therefore, they changed their name to HER only for the United States and "Razorblade Romance". Eventually, the full rights to HIM were finally bought, and copies of the album bearing the name HER were discontinued and replaced by the correctly titled HIM version.

The band name HIM originally was considered as short form of the band's original name His Infernal Majesty (used up to 1996). Nowadays frontman Ville Valo claims that it doesn't mean anything: "I can't even remember our latest lie about that. When Hanson was hot, we said it means Hanson Is Murder. The name doesn't have a particular history. His Infernal Majesty was a totally different band. I think HIM derives from some death metal joke."