A willing creature with the Mount role (see Creature Roles in Draw Steel: Monsters) can serve as your mount as long as their size is greater than yours. You can climb onto your mount freely (see Climbing Other Creatures above). You determine which space you occupy. While mounted, you can take the Ride move action, but a mount can only be ridden this way once per round. Both mount and rider each take a turn during combat.
If a creature riding a mount is force moved, they are knocked off the mount and must make a test to determine how they land (see Climbing Other Creatures). If a mount is force moved, they carry any riders with them. Riders and mounts teleport separately.
If your mount dies, they fall prone, and you fall off them and land prone in the nearest unoccupied space of your choice.