Pretty much any character you have to escort for a mission (especially the ones who, if killed, force you to restart).
They are pretty much required to do one or more of the following:
1) Charge into a swarm of enemies before you've finished off the current crop.
2) Lose all sense of direction, in spite of their only requirement being to follow you.
3) Get stuck on random objects, like rocks or poles.
4) Walk at a maximum of half your speed.
5) ***** at you for not moving/killing quickly enough.
If you recognize my picture you know exactly who I'm talking about. But these should cover all escortees.
They are pretty much required to do one or more of the following:
1) Charge into a swarm of enemies before you've finished off the current crop.
2) Lose all sense of direction, in spite of their only requirement being to follow you.
3) Get stuck on random objects, like rocks or poles.
4) Walk at a maximum of half your speed.
5) ***** at you for not moving/killing quickly enough.
If you recognize my picture you know exactly who I'm talking about. But these should cover all escortees.