This card's DEF is the same as the ATK of "Ally of Justice Clausolas".
The artworks of both cards show each monster in the exact same position.
It is very possible that this card is, in fact, "Ally of Justice Clausolas" before being turned into a Machine. This is especially evident by the flavor text of "Ally of Justice Clausolas", which mentions that it is "the ultimate weapon designed from Claiomh Solais".
This monster has a "Nekroz" counterpart: "Nekroz of Clausolas". However, while "Nekroz of Clausolas" shares its Level and DEF with this card, its ATK and DEF are the inverse of those of "Ally of Justice Clausolas".
This card has the highest DEF of all Level 3 monsters.