Red Lotus Knight Beast is Light.

Red Lotus Knight Beast Skills

Duke Elysian: A powerful wave of energy is emitted from the energy gathered in the Holy Shield, Aegis, along with a shock attack from its own power, and also has the effect of purifying evil in the web.

SiegSaber: Strengthens the Gram, and its length increases significantly.

Royal Saber: A skill that pierces the enemy's body at the speed of light with the Sacred Lance-〖Gram〗

This shows that the Red Lotus Knight Beast is light.

Character Setting

In the official setting, the Red Lotus Knight Beast X's digital alloy material has been greatly improved, and the length of the lance has been increased by a lot, so the Red Lotus Knight Beast X's attacks and defenses are far more than the Red Lotus Knight Beast. Other than that, there is no other description for Red Lotus Knight Beast X.

But in the game plot Red Lotus Knight Beast X had defeated Omega Beast X. According to this plot, Red Lotus Knight Beast X should be the strongest existence of the X antibody.