Octotrooper

"Octotroopers dead ahead!"

- Cap'n Cuttlefish

Octotroopers are the main Octarian fighters found in Octo Valley. They are easily the most plentiful enemy. Being average size with either a single tentacle or two, these Octarians shoot purple ink from their craft. They are very simple enemies, and only require two ink shots to take out. There are a few types, with Twintacle Octotroopers being faster and smarter than single tentacle Octotroopers. There are also Shielded Octotroopers that have a shield in the front, preventing an easy frontal assault, and can be an easier target with a simple grenade, and makes an easy target until the grenade explodes.

Appearances
Octotroopers appear in the majority of Octo Valley missions, with some notable exceptions: the four main Boss stages, the four Octoling levels, and Unavoidable Flying Object. Levels which do contain Octotroopers can have as few as two or more than twenty throughout.

In the manga series
In the end of the fan-made issue of Splatoon, a then unnamed Glasses-Kun flies over a bunch of Octotroopers and Octoballs. It's most likely that they would not appear in the manga again. But will possibly do so due to the Inkopolis Tower not having the Great Zapfish on it.