•new topology – the ratman is now made of all rectangular faces for better detail & weight paint
•Body-groups – the ratman's gown & hair can now be toggled on/off, along with a new jumpsuit to replace or compliment the gown
•Revised bone orientation – Bones are now oriented with 1 axis pointing down the appendage, another pointing down the joint's primary rotation, & the 3ʳᵈ… were it must be given the location of the other 2 axis
•Nextbot – the ratman is now available as an entity that attempts to follow player 1 while attempting to gum any other player to death
•UV wrapped clothing textures (only affects skin 0 on the gown; the legacy gown texture, skin 1, is roughly uniform)
•Bones have been deleted & added to improve the quality of the animations, while wasting less resources on bones that don't move
•Transitional animations are no longer walk-frames (they never should've been walk-frames)
•scurry & tele_attack_a animations are now available in the player version of the model

•Textures are properly positioned.
•Viewmodel hands are less mangled.
•Run & walk animations are now different.
•Jump animation added.
•Physics constraints are improved.
•Some minor weight paint issues are resolved.
•IK rules are set more properly.

•IK rules (npc_citizen): The game now keeps the ratman on the ground, even when the ground is sloped..
•Vehicle animations: The ratman now sits in airboats, jeeps, & pods.

•npc_citizen now walks on the ground (¬ ≈1′ above it).
•NPC menu items are now in the same category, marked with preview icons.
•playermodel now stays animated for all default Sandbox weapons.

•NPC's now walk.

•Included hand models are less low quality (still no nails; never!).
•Ratman is now available as an npc_headcrab_black. Careful! it bites. It has no teeth, but its mouth is Násty!