The Elf Bull is a prototype transformable mobile suit featured in the Gundam Reconguista in G anime series. It was made by the Capital Army and piloted by Dellensen Samatar.

A new mobile suit developed by the Capital Army as a prototype of the "Elf Series" and successor to the Catsith. Intended for long-range attack operations that do not rely on the sub-flight system, it has the ability to transform into mobile armor form. The mobile armor form enables high-speed movement and flight in both atmosphere and space. In addition, the cruising range will be extended by equipping the rear part of the mobile armor with a long-range booster. However, as a structural weakness, it is defenseless when transformed. Armed with a large number of beam guns built into the whole body, it has high firepower.

The Elf Bull was used by Dellensen Samatar during his attack on the Megafauna to rescue Bellri Zenam and others, and engage with the YG-111 Gundam G-Self Reflector Pack. The Elf Bull, which is mainly a beam cannon, struggles against the G-Self's Reflector Pack that absorbs the beam, but it still overwhelms Klimton Nicchini piloting the MSAM-YM03 Montero, who has been supported by the G-Self.