Silvergon (シルバゴン Sirubagon) is a ram-like Ultra kaiju used by Krazar.
- Super Strength: Unlike most monsters, Silvergon has and is gifted with very incredible pure brute strength and can easily overpower all but the strongest of enemies. His strength is powerful enough that it even allows him to physically shatter protective energy barriers, such as Gagi's dome, with his palms, as well as strong enough kill other monsters with one bite. This strength is also powerful enough for Tiga's power mode to have difficulty in battle.
- Armored Skin: Silvergon is covered in a thick skin, which acts as armor, which can repel most attacks.
- Whip Tail: Silvergon's tail is long and thick; ideal for whipping and bashing his foes into submission.
- Rainbow Underworld: Silvergon can create a huge rainbow that acts as a gateway to some kind of underworld, full of snow. Silvergon generates a subspace dimension which it uses as a home and a hunting ground. The entrance/exit is marked by a rainbow arc and the underworld dimension, as well as the rainbow, will vanish completely and fades away when Silvergon is dead/destroyed. The only way out is through the same rainbow from which the victims came.
- Horns: Silvergon can use his horns as effective melee weapons.