Blade is a word name defined by precision and edge. In pet naming it belongs to the same family as Fang and Axe: names that project power through direct vocabulary. There's also the 1998 Marvel film with Wesley Snipes, which keeps the name current in pop culture.
The Tough-Name Tradition
Blade sits in the category chosen to signal toughness: one syllable, hard consonants at each end, communicating something about the owner's self-image as much as the dog's personality. Rottweilers, Pit Bulls, and Belgian Malinois wear it most naturally.
Pop Culture: Wesley Snipes' Dhampir
The Blade trilogy (1998-2004) made the name synonymous with a disciplined, morally serious fighter. The Marvel Cinematic Universe has since revived the character, keeping it current for a younger generation of owners.
The Counter-Reading: Aggression Signal
A dog named Blade communicates something specific to other owners before the dog has done anything. That social dimension is worth considering, particularly for breeds already subject to public perception bias. The name can reinforce stereotypes that many powerful-breed owners actively work to counter.