The actual licensed Monster High logos are copyrighted by Mattel. However, the fan-made "Ness Pro 24" files are generally distributed as freeware for personal projects (fan art, bedroom decor, birthday parties). You cannot sell t-shirts with this font.
It is important to distinguish between Ness Pro and the main Monster High logo. Monster High Font Ness Pro 24
Ness Pro is a commercial typeface designed to evoke a "creepy but chic" atmosphere. It mimics sharp monster claws and teeth through its jagged, slightly irregular letterforms. In the context of "Ness Pro 24," the number "24" typically refers to the (24pt) often used in design templates for headers or prominent text in the franchise's style guides. The actual licensed Monster High logos are copyrighted
If you want the specific file that users claim works for Cricut, Silhouette, or Photoshop: It is important to distinguish between Ness Pro
The font is black and white, but Monster High relies on neon accents. Use #C800A1 (Draculaura Pink) and #00FFCC (Frankie Blue) as drop shadows.
The "24" variant usually has tighter letter spacing (kerning). When typing "Ghoul" or "Manster," reduce the letter spacing by an additional 15-20% to mimic the original logo.