Sling is mainly white with some grey - upper back legs, tail and ears. Back legs have a joint at the ankle then ball joints at hip & knee, and there are also ball joints at the foreleg shoulders. The ears move back and forwards. He's quite poseable and stable, I've got him standing on his back legs with the front legs in the air.
He has a weapons mode like many of the other Neo Cybertrons: Pull up on the panel behind his head bending back about 90 degrees, then fold back so it covers the back of the beast, and fold the fore legs back. Extend the legs out the back of the beast. Separate the head in two and fold to the sides level with the protruding robot head so that the grey panels lock into their clips. Fold the rabbit head parts so they're facing straight forward. Bend the ears as far forward as possible, and turn the rabbit head halves so they're facing out. Fold the rear legs up over the toy so the feet are over the shoulder of the forelegs. The resulting weapon is some sort of odd double barrelled weapon or a scissor claw - the ears move together when you pull back on the tail. The weapon can be held by the larger toys - there's a 5mm peg underneath. A nice little touch - on the bottom of the peg is a molded Cybertron symbol !
TF: Since weapon mode is so close we'll start from there: straighten the rear beast legs out behind the toy, folding the beast foot back as a heel spur and the robot foot down from the lower leg. Swing the rabbit heads down to form the arms and turn at the elbows to reveal the hands.
Resulting robot has the beast back legs serving as it's legs with all the poseability they had, plus ball jointed shoulders & elbows, and a neck joint. More grey and some gold is revealed in this mode - the grey is on the upper limbs and feet, the gold on the robot head, chest and lower limbs. The beast ears form blades sticking out the robot's wrists. There's a large red Cybertron spark embedded in the left of his chest. The arms still move a bit when you pull down on the tail.
Overall: Simple toy, does the job. More solid if still silly weapons mode.