Iguanus is the same character as the original Beast Wars basic back again in a larger TM2 form. He's mainly blue with chromed silver and painted orange frill round his neck. All four legs have ball joints at ankle and knee - the front legs have limited ball joints at the hip inside the body whereas the back legs just bend to the sides. The tail - which is posed in a curved position - is hinged up and down at it's base.
The frill on this version is in five separate pieces around the neck all connected into a plastic ring - there's a slot for each piece with a stud either side of the slot and a hole through each piece for the stud to rest in. Unfortunately they're rather loose and fall off, which is why Iguanus lives in a box - to keep all his bits together ! The frills are part of a gimmick in this mode. There's a trigger under his throat: press it and his jaw opens firing a missile & the frills spring up. The frills stay up till the missile is reinserted. Not a bad gimmick. The gimmick is powered by the central frill part - which is a little more solidly attached - so when reassembling the toy care must be taken to get the centre frill under the two either side of it and the outer frills on top of the two either side of them.
TF: Fire the missile and fold the mid body panels out to the sides. Separate the front legs and fold them out to the sides. Fold the head into the vacated cavity. Lock the legs back together to form the robot waist and fold the legs down from here - they are prone to springing apart again. The front of the knee should be turned so it's the opposite side of the leg to the frill/skirt and the toes on the foot should point out the same side. Pull the back beast legs out to the sides to form the arms and position them so they look right. Fold the opposable thumbs out. Turn the tail round to reveal the head and fold the tail down behind the head. Place missile in the robot's hand as a staff.
The resulting robot is mainly dark blue up the top and a more metallic blue lower down. His mid section, upper legs and lower arms are orange. The dark blue obscures some nice detail molded into the toy including a five missile array on one of the shoulder pads. A panel on the chest folds open to reveal a pinkish purple Predacon spark. The legs (formerly the beast forelegs) are ball jointed at ankle, knee & hip. The head can turn but is very limited by the beast tail behind it. The shoulders shrug up, turn and fold to the sides while the elbows and wrists are ball jointed.
Iguanus is a lot better than I remember it being - the intervening years since I got it having been spent hunting for missing frills which coloured my opinion. The chrome work is less widespread (or more confined in one place) than on other TM toys. He could do with a better hand weapon/some way of firing the missile in robot mode though.
I'm feeling rather sorry for the toy now. It deserves better colours than it's had.