Welcome, this is my first guide, I list species in tf2 from ones you see everyday to some you may have ever seen!

F2P are very common in tf2.

A F2P can be annoying, some can be better than others, F2Ps try to do the best they can, also they do not understand what friendlys are, do not blame them as theese types of f2ps are still very new to the game (2 weeks - 5 months).

A generic friendly is a normal TF2 user that goes out of his way for friendlies
A generic friendly can be all classes, and usually will stop and have fun with a hoovy or some other form of friendly critter.

These guys are real ♥♥♥♥♥♥♥♥, they will kill a friendly as if it was just another player.
A tryhard (Usually a Pyro or Scout) are people that cause for a percentage of theese creatures to become endangered.
The real way to deal with theese guys is just to hide from them or tell them to stop, if that does not work you can grab a gun and deal with him anytime he comes around.

The statue
The statue is a user that goes idle with any partner taunt (Specifically high five).
If lucky enough, the statue will have some guys guarding the statue and will have a longer lifespan.

Box Spies
Box Spies are harmless unless outside of its box, the Box Spy rarley move in a group.
The box is used to hide from other species such as the tryhard.
Once the Box spies have traveled to a good area, they will stay there.

The Hoovy
The Hoovy is a creature almost everyone knows about.
Hoovy likes everything, exept for people that try to kill him.
The Hoovy is a great friend to have.

These guys are very, very rare.
As created as a joke, the M8 is a very rare species.
The M8 is a sniper that wears no cosmetics, and has no weapons.
The only thing the M8 has is just the high five taunt.
The thing that the M8 does is go out somewhere and waits for someone to high five him.
This creature will harm nobody exept for airblasting pyros and other snipers with jarate, the M8 will do anything to kill them.
The M8 however, love pool party pyros, to them this is a sign of peace.

The endangered spycrab, born from a glitch.
Theese guys have only one goal, to not get killed.
They wear what your normal tf2 player would be wearing, and even sometimes an unusual.

Turtleneer
The Turtleneer is a creature that can be found most commonly in valve servers, usually leaving the nest slowly and making their way to a defensive point. Once there, they build a sentry, dispenser and teleporter, only leaving their buildings to get metal. Sadly, most do not survive for long. They are an easy target for spies and demomen, making it very hard for them to stay alive.

The Pyroshark.
The pyroshark is a very, very scary and deadly creature.
Theese creatures are mostly found on maps with water like 2fort or sawmill, equipped with the perfect weapons for this creatures survival.
The one thing you should always remember with a pyroshark, is that it will always, always get their kill.

The Pybro.
The engineers best friend - a pybro.
The pybro is a pyro that is specifically helps engineers, making this creature very useful.