"Gyzarus" is a combination of 3 syllables: "Gy" is a deformation of a syllable of the first name of Gaius Julius Caesar, so instead of "gai" is "Gy" because the similarity of the pronouncement. "zar" it can be from the meaning of Russian emperors Czar or a deformation of a syllable of the last name of Gaius Julius Caesar, so instead of "sar" it can be "zar". "us" it can be from the last syllable of the first 2 names of Gaius Julius Caesar.
This card has an effect similar to that of the base "Monarch" monsters, activating when it is Summoned to the field. It also has 2400 ATK which is the same for every "Monarch".