Question: Two questions; One, what is the language the vampires are always speaking? Was it made up or is it a real language? Two, if Blade was called Eric before, how did he "become" Blade, meaning how did he earn the name?
BaconIsMyBFF
13th Jul 2017
Answer: The vampire language is Esperanto, a real constructed language created in the late 1800's. To an English listener, the language sounds foreign yet vaguely familiar thus it works as a plausible "secret language" spoken by a secret society. It is never explained how Blade got his nickname, however his proficiency with bladed weapons seems to be a logical explanation. A deleted scene in Blade 2 shows Whistler interacting with Blade when he was young, telling him to "drop his blade".
BaconIsMyBFF
Apologies, but 'BaconIsMyBFF' is incorrect. The vampire language is definitively not Esperanto. Respected language expert and UCLA linguistics professor Victoria Fromkin was hired to create a fictional vampire language. For the second film, a new linguist, J. Matthew Pearson, was brought in to write new language excerpts due to prof. Fromkin's death in 2000. A thread discussing this fact can be found at - http://archives.conlang.info/bhe/qhuenphi/jhurphilwein.html.