They decided on his fifth divine ability. The Liquid graviton divine ability is from a race of special earth elementals. They live in an environment with a high gravity so their bodies adapted to it. The usual solid form of earth elementals was ditched for a special dense fluid state that can withstand pressure and impacts.
Its major weakness is that it is very heavy so anyone that possesses it will become very slow. Its second weakness is that it consumes a lot of energy to maintain. The density of the liquid graviton is achieved at a very high cost in Origin energy. Origin gods can handle the energy requirements but it is highly restrictive to Sovereign Supreme Beasts.