One of the riddle giving guards who always told the truth or always lied. Alph was the one on the left wearing red, and who Sarah chose to direct her question to.

The Alph is supposedly an "underground river" of Esotericism in Europe, symbolising the secret knowledge held in that Continent.

alph implements and analyzes historical and traditional ciphers and codes, such as polyalphabetic, substitutional, and mixed employing human-reconstructable algorithms. It provides a pipe filter interface in order to encrypt and decrypt block text to achieve transparency.

causes the current value of a specified counter to be printed in alphabetic characters