Anyone who has played the Crimson Hammer missions remembers the area right before the final battle of Seerus. In it, we see that the attacking squad of knights was attacked and neutralized by the Stalkers, with only Lt. Feron remaining standing. Feron claims he is too wounded to continue, and so sends you (and your party, if applicable) on to defeat Seerus.

I'm here to tell you why Lt. Feron is a coward, a liar, and above all a disgrace to the Spiral Order.

1. Feron could have easily continued on to fight Seerus, because no matter if he was wounded or not... there are health-restoration pads right before the gate to Seerus! Any one of you has been hit by things MUCH worse than the spinning blades of the Ghostmane Stalkers (Vanaduke's giant fiery mace, a giant Jelly spinning around, huge homicidal gun puppy lasers, etc, etc.). Those health pads have ALWAYS restored us back up to battle-readiness. Feron could not have been hurt enough to be unable to continue. No, obviously he was looking for an excuse to chicken out of fighting big bad scary Seerus, and we gave it to him. Cowardice!
(The only other possible explanation for this is that Feron was unaware of the existence of the healthpads. In that case, he is incompetent to an extreme degree, as the healthpads are only a short distance away.)

2. I'm sure some will think, "Well, Feron was just tired out by his fight with the gremlin ninjas - after all, he did kill the whole lot of them!"
This would be a valid point... IF Feron had indeed slain all of those Gremlins. However, even the most cursory examination of the battle scene proves that Feron did NOT heroically defeat the gremlin horde. The smoking gun? Knockback.
When we come upon Lt. Feron, he is surrounded by the corpses of a dozen or so gremlins. These corpses are all very close to him - TOO close. Tell me, when was the last time you defeated a gremlin and watched it fall by your feet? Never - because gremlins fall backwards several steps with their characteristic flips upon defeat! And that isn't taking into account the knockback of weapons. Even low-force blades like the cutter series and toothpicks have slight knockback, and as a typical Spiral Knight, Feron most likely wields a Leviathan Blade - which has quite a bit of knockback.
No Feron did not defeat all those gremlins. So how did they end up around him? Simple: he let his squad take the majority of the hits from the gremlins, then dragged the bodies of the defeated gremlins into a circle around him, in order to fool us into thinking him a hero! In fact, the entire operation is credited as FERON's assault on the Grand Arsenal, when in fact he did very little of the actual work! Feron is obviously a glory-seeker.

In short, Lt. Feron is obviously guilty of cowardice and deceit of the highest degree, and should not be permitted to retain his high position as a Lieutenant in the Spiral Order!