Come in two variants one plods slowly toward you much like a zombie.
The other jogs toward you.
The basic fodder, that frequently impedes your path.
Critical point is placed randomly around the legs, arms, or neck, but never the body. (torso area)

Spiral Smile
Weak point: Green starburst face
Movement speed: slow
Counter-attacks: impossible

A chime sound can be heard whenever these atrocities come near.
Can only be destroyed by popping it straight in the green face.
Over all not too big of a threat as it's movement is often too slow.

Another Smile
Weak point: Random
Movement speed: Fast on land, creeps slowly on ceiling.
Counter-attacks: possible

Very similar to "Lickers" of the Resident Evil/Bio Hazard franchise.
As such they even have the same attack pattern. To sneak up on you from above, and trounce their prey when on ground.
Try going for their critical points while it's on the ceiling.

Bombhead Smile
Weak point: Head
Movement speed: slow
Counter-attacks: possible

Fairly easy to kill with one direct hit to the head.
B e forewarned though, if you hit the outer shell instead, Bombhead will self destruct destroying everybody within it's reach.
(You can use this to your advantage when surrounded by more Smiles than you can handle. The explosion will kill fellow Smiles.)
It's advised that you do not try to kill Bombhead  un scanned, because it will sprint towards you when attacked undetected.

Diver Smile
Weak point: Random
Movement speed: slow
Counter-attacks: possible

The same as Heaven Smile except it makes a flashy entrance by dropping from the sky.
Could be quite a nuisance when teamed up numerous Smiles.

Basically the same as Heaven Smile, except can only be killed by a critical hit.
It should be noted that Poison Smile can be eliminated with counter attacks or pure brute force using Mask de Smith.

Phantom Smile
Weak point: Enlarged limb
Movement speed: slow
Counter-attacks: possible

To do battle with a Phantom Smile is like gambling with life or death.
They can easily be killed with a direct hit to the enlarged body part.
(Varies sometimes it's the head, one of the legs, or one of the arms.)
Be weary around the Phantoms for if you don't score a direct hit at the Phantoms weak point, they will instantly teleport right in front of you, grab you, and detonate.
(You still have a split second chance t o kill the Phantom Smile. Just aim & shoot for the weak point as many times as you can before Phantom self destructs. It's not as easy as it sounds.)

Giant Smile
Weak point: Eye
Movement speed: slow
Counter-attacks: possible

Giants are exclusive to the  Cloudman mission.
Their weak point is their eye, but it is easier to just run away from them when they fall, or use Kevin's invisibility.

Ulmeyda Smile
Weak point: t-shirt
Movement speed: average
Counter-attacks: possible

Yet another Cloudman exclusive.
Tend to mind their own business ,and merrily run from destination to destination.
As long as you don't bother them, the Ulmeyda's will ignore you.
Ulmeyda's are perhaps the easiest targets in Killer 7.
Mainly because their main purpose is to provide you with coins used to purchase Ulmeyda minis.

Backside Smile
Weak point: yellow gem located at the center of it's back
Movement speed: slow
Counter-attacks: impossible

They're quite a threat with the combination of being both slow moving, and fairly hard to destroy.
The only way to stop them is to force them to flip around by repeatedly shooting one of their arms until it turns around, revealing the weak point.
Without hesitance you must quickly bust a cap at the yellow gem before the Backside regains it's composure.

Protect Smile
Weak point: None
Movement speed: slow
Counter-attacks: impossible

Indestructible, can only be killed by Mask's grenade launchers.

Protect Z Smile
Weak point: none
Movement speed: slow
Counter-attacks: impossible

Indestructible, can only be killed by Mask's level one charged shot.

Broken Smile
Weak point: Core of jetpack
M ovement speed: Very fast
Counter-attacks: impossible

A highly dangerous adversary. When they spot you they fire up their jetpack, and speed towards you.
A critical hit may be hard to achieve, but they can be killed with one of the stronger personas such as Dan by repeatedly aiming for it's body until the Broken fall to their death.

Protect ZZ Smile
Weak point: none
Movement speed: slow
Counter-attacks: impossible

Indestructible, can only be killed by Mask's level two charged shot.

Laser Smile
Weak point: head
Movement speed: none
Counter-attacks: impossible

Although strapped up, and immobile the Laser is not to be frowned upon.
Once you're spotted the Laser will power up, and strike you with an ominous beam of light.
You have two options, either run away for your life or kill Laser as fast as you can with a direct slug to the dome before the beam connects.