Sethrc &  Overdune can be found in the town of Rust .  Volog is also in Rust but he only offers to join after you have found the Ancient Troll Home.  Flamdring is staying with rather unfriendly relatives in Ilsingore's Cave .
 

Sethrc Thistlebone War Troll	Flamdring Dragon
Might 34 Hit Pts 381 Intellect 11 Spell Pts 0 Personality 13 Fire 0 Endurance 23 Air 0 Accuracy 19 Water 0 Speed 21 Earth 5 Luck 15 Mind 0 Level 30 Body 5 Skills:  Mace (M), Staff (M),  Leather (E), Chain (E), Armsmaster, Body Building (E), Disarm Trap, ID Monster (E),  Merchant, Perception, Regeneration (E), Repair Item (E)	Might   50 Hit Pts 320 Intellect  23 Spell Pts 195 Personality  9 Fire  0 Endurance  30 Air  0 Accuracy  13 Water  0 Speed  17 Earth  0 Luck  16 Mind  0 Level  15 Body  0 Skills: Dragon Ability (E), Alchemy, Body Building (E), ID Item (E), Learning, Meditation (E), Merchant (E), Perception (E), Regeneration (E)
Overdune Snapfinger Troll	Volog Sandwind Troll
Might 30 Hit Pts 180 Intellect 7 Spell Pts 0 Personality 7 Fire 0 Endurance 24 Air 0 Accuracy 20 Water 0 Speed 18 Earth 5 Luck 16 Mind 0 Level 15 Body 5 Skills: Bow, Mace (E), Staff (E), Leather (E), Chain, Armsmaster, Body Building (E), ID Monster, Regeneration	Might 30 Hit Pts 180 Intellect 11 Spell Pts 0 Personality 13 Fire 0 Endurance 23 Air 0 Accuracy 19 Water 0 Speed 21 Earth 5 Luck 11 Mind 0 Level 15 Body 5 Skills: Mace (E), Staff (E), Leather (E), Chain, Armsmaster, Body Building (E), ID Monster (E),  Regeneration (E), Repair Item (E)