Royal coat of arms of Mobius

The royal coat of arms of Mobius, or the royal arms for short, is the arms of dominion of the Mobian monarchy, currently King Myles. These arms are used by the King in his official capacity as monarch of Mobius. Variants of the royal arms are used by other members of the Mobian royal family, by the Privy Council in connection with the administration and government of the country. The arms in banner form serve as basis for the monarch's official flag, the Royal Standard.

In the standard variant, the shield is quartered, depicting in the first quarter the castle of the Dukedom of Leod; in the second, the extended hand of the Barony of Belfast; in the third, a galley for the Marquessate of St. Stephen's; and in the fourth, the rampant lion of the Dukedom of Limerick. The crest is a phoenix surrounded by flames above the Crown of St. Bartholomew. The dexter supporter is an antelope ; the sinister, a gryphon.

This armorial achievement comprises the motto, in French, of the House of McCloud, Montjoie, mon dieu (Onwards, my Lord). The official blazon of the royal arms is:

"Quarterly, first Azure a triple-towered castle Argent masoned and ajoure Sable (for Leod); second quarter Gules a dexter hand extended Argent (for Belfast); third quarter Gules a galley Sable (for St. Stephen's); fourth quarter Azure a lion rampant Or (for Limerick); for a Crest, upon the Royal helm the Crown of St. Bartholomew Proper, thereon a Phoenix Or rising from flames Gules; Mantling Or and Ermine; for Supporters, dexter an Antelope rampant Or, sinister a Gryphon also Or. Motto 'Montjoie, mon dieu' in the compartment below the shield."

As the Golden Jubilee of King Myles approaches, the Royal Commission on the Planning for the Golden Jubilee of His Biscayan Majesty King Myles has announced that they will create an official royal coat of arms to represent Mobius, citing the royal arms as a placeholder that was meant to be replaced in a future date. The final design will be unveiled during the Mobian Golden Jubilee Festivities in 2026.