A Great Cave Squig that is used as a mount for a character may re-roll the Random Movement roll as long as the character is still alive. If the character joins a unit of Squig Hoppers then you may re-roll the Random Movement roll for the whole unit.
Source: Warhammer Fantasy: 8th Edition
A Great Cave Squig that is used as a mount for a character may re-roll the Random Movement roll as long as the character is still alive. If the character joins a unit of Squig Hoppers then you may re-roll the Random Movement roll for the whole unit.