GI Joe Classified Series' Croc Master and Fiona (the crocodile) and McFarlane Toys DC Multiverse's Killer Croc megafig
Croc Master is an old favorite from the original 80s action figure line. This new version is bigger at 6 inches and definitely much better in terms of number of articulation, detail, sculpt, and number of accessories.
The crocodile is highly articulated, as is what is quickly becoming a tradition in Hasbro's GI Joe Classified Series. Before it, was Snake Eyes' wolf Timber, which has more articulations than many human figures in the line.
Fiona's neck and all of her limbs have at least two movable joints each. As it should be, the mouth can also be opened and closed, although it is a bit strange that it is the upper head that can be moved instead of the lower jaw.
As for Killer Croc, it is a megafig issued by McFarlane Toys and that is nearly nine inches in height.
Not shown are the two little crocs that are included with Fiona.