The nameds under level 65 hit for around 600 max and summon, most of those over level 65 hit for around 800 max and summon fast, every few seconds.
The one-groupable Stone Thrower and Drarakon the Mad hit much harder and see invis (and SoS I believe). I've never fought them but I think Drarakon hits for around 1400 and Stone Thrower for over 3000.
Most of the nameds have procs/AEs of varying levels of nastiness. Some are just the same as the equivalent trash mob, but others worse.
Is it the roaming Stalking Feran on the ledge with the regular ferans near the second bridge?... Or the roaming stalking feran in the pit heading towards Slavedriver Menlo? I have killed both many times and have yet to see this mob up.
It is the one on the ledge, or atleast every time I have seen him...I have killed Packleader a dozen times have seen minor and lesser runes a few time almost always has the ring, even when he has a rune...I assume the sword is his rare...I have never seen the sword drop and this is a favorite camp of mine for farming feran bloods.