Progression of a Gibus

Stage 1: Protogibus
A protogibus is a player has yet to dominate another player wearing a gibus. This is likely due to the poor motor skill associated with this early stage of evolution. The protogibi are prone to self-destructive behavior, such as running into a sentry nest. If you see a protogibus, take pity on them, for they tend to live a very unfulfilled existence. Preferred classes include: Scout, Engineer, Heavy, Pyro, and Spy.

Stage 2: Gibus
A gibus has evolved the basic motor skills required to play the game effectively. They are still considered to be on the level of plebians, though, due to relative inexperience compared with the higher level entities. They are the primary populace of valve servers, and often feel like "The Hoard," of TF2. Preferred classes include: Pyro, Sniper, and Spy. These players tend to avoid playing Demoman and Medic.

Stage 3: Mann-co Cap
A mann-co cap player can be seen as an ascended gibus. They care about the game enough to put money into it, indicating that they have reached a level of evolution where they have enough skill to enjoy the game.

Stage 4: Hatted
After surpassing the level of mann-co cap, and earning a real hat, a player has gone beyond the category of gibus. These people can be considered "good players," in the sense that they tend to dominate valve server pubs.

Ascended:
This is the final stage in gibi evolution. Ascended players tend to carry peculiar weapons, that have been observed to count kills or other events that the player was involved in. While there is variation in the threat that ascended players represent, it should be noted that ascended with more than 8500 kills on their weapons, while rare represent an extreme threat. A select few ascended will carry with them records of their service in comp. These players are the apex predators of the tf2 world, as they regard pubs as nothing more than target practice. Even though they would be served better by playing lobbies they choose to play on pubs for their shooting gallery aesthetic