Lance Sentry

Lance Sentries are enemies in Hollow Knight. Guarding the City of Tears, these winged sentries of Hallownest are equipped with a nail-lance to pursue trespassers.

Behaviour and Tactics
They float in place or cling to a wall until engaged. They tend to stay well out of melee range, so the best way to kill them is waiting for them to charge, jumping over them when they do and down-striking them as they pass underneath. As they have a fair amount of health, it might take some time to kill them.
 * Charge: they lower their lance and swoop down toward the Knight.
 * Lance Throw: they aim and throw their lance in a straight line at the Knight.

Location
They can mainly be found in the centre and west of the City of Tears. They can also be found in the Royal Waterways and Ancient Basin.

Trivia

 * While Lance Sentries usually drop, there is a single Lance Sentry in the Watcher's Spire that only drops the first time it is killed.