Lincoln Osis (3014 – 23 April, 3060, aged 46 years) was a Clan Smoke Jaguar Elemental who became Khan of his Clan during the invasion and later became ilKhan of the Clans. He presided over the death of his Clan when the Smoke Jaguars were pushed out of the Inner Sphere and were annihilated on their homeworld of Huntress. Osis himself was killed by Victor Steiner-Davion on Strana Mechty in 3060 during the Great Refusal.
Lincoln Osis was known from early on as one of Clan Smoke Jaguars' brightest ristars and a staunch Crusader. His rise to power was marked by a combination of battlefield and political acumen, leadership qualities, and sheer violence. Instead of simply claiming any Bloodheritage available, he waited for a specific Osis heritage to be opened to challengers, then triumphed over Mechwarriors in augmented combat.
At nearly 165 kilograms Osis was considered massive even for an Elemental. With his size, ruthlessness and all-consuming drive to conquer, Osis was a dangerous enemy who never balked at using whatever tools were necessary to achieve his goals, be it weapons, politics, or his fists. Though sometimes underestimated by his opponents due to his quiet, brooding demeanor, Osis' quick-to-ignite rages were legendary, and many died at his hands in a Circle of Equals simply for implied insults or poorly-worded admonishments. Despite, or perhaps because of, the violence associated with him, Osis gained a strong following within the Crusaders of both his Clan and others.
Lincoln Osis bid for the invasion corridor and ordered the splitting of the Jaguar Galaxies in the first wave of the Invasion of the Inner Sphere.  He was forced to defend his Clan's actions on Idlewind in front of the Grand Council during the first wave.  Osis issued the Batchall for the conquest of Hanover in July 3050  and led a binary of Elementals of the 6th Dragoons on Byesville in October 3050 
Battle of Tukayyid
During the Battle of Tukayyid Osis led both his own Sixth Jaguar Dragoons as well as serving as overall commander for the Jaguar's Alpha Galaxy attack against the primary target city of Dinju Heights. Defended by the Com Guards veteran ranked Fifth Army, the assault on Dinju Heights started well for the Jaguars, with the Sixth Dragoons wiping out the green 50th Division to secure Alpha Galaxy's drop site.     
While the rest of Alpha assumed it was their superiority over the ComStar forces allowing them to effortlessly roll over the Com Guard defensive lines, Star Colonel Brandon Howell correctly suspected a trap in the seemingly undefended Dinju Pass, ordering his Jaguar Grenadiers to advance at maximum speed, preventing the hidden 299th and 323rd Divisions from catching the entire cluster and reaching the other side of the pass.      
Unwilling to be outdone by a subordinate, Khan Osis ordered the Sixth Dragoons to make their own run, by which time the 299th and 323rd Divisions had fully emerged from hiding. With the Com Guard divisions now crowding the floor of the pass and creating a gauntlet of overwhelming firepower, the Sixth suffered horrendous losses. Worse was to come when a Com Guard MechWarrior succeeded in defeating Loremaster Edmund Hoyt and seemingly killing Osis; in truth Osis was incapacitated and pinned beneath Hoyt's shattered Summoner. Osis's apparent demise followed shortly after by the death of saKhan Sarah Weaver during Beta Galaxy's push to the secondary target city of Port Racice led ilKhan Ulric Kerensky to order the shamed Smoke Jaguars to withdrawal from Tukayyid.       
ilKhan of the Clans
Though Brandon Howell had been recently elected Khan of the Smoke Jaguars, he graciously accepted the post of saKhan instead when Osis rejoined the Clan. Between 3053 and 3058 Osis concentrated on rebuilding the Smoke Jaguars' strength, though constant rebellions and Combine raids hampered these efforts considerably.
Despite the crushing setbacks the Smoke Jaguars had experienced during the invasion, the Refusal War left them at the head of the Crusader movement, in no small part due to Osis' force of character. Thus, when a new election for ilKhan was held on 19 November, 3058, it was Osis who was voted into the position with a resounding victory of twenty-two votes to twelve. Osis' intended to resume the invasion immediately, but Khans Marthe Pryde and Vladimir Ward succeeded in stalling the planned assault for six months. Intended as a period for the Clans to settle challenges and make preparations, the delay was engineered by Pryde and Ward to undermine Osis as ilKhan: in encouraging fighting amongst the Clans, the Inner Sphere would have more time to prepare for the Jaguar onslaught, and Osis would have a harder time fulfilling his mandate. Unbeknownst to all, the delay would also allow for the destruction of Clan Smoke Jaguar and cost the life of Osis himself.
As a result of this, Operation Bulldog caught the Smoke Jaguars preparing for offensive operations of their own. Osis at first treated the matter as an internal Jaguar affair, despite the fact that Clan Nova Cat holdings were also attacked. When the sheer size of the Spheroid operation became apparent, Osis then attempted to open the invasion to Home Clan forces in hopes of preventing defeat, but the Wolves and Jade Falcons stated that any would-be participants would need to defeat both of them first.
Humiliatingly for Osis, the Jaguars were driven out of their Occupation Zone in just four months. Even worse news followed: the Smoke Jaguar capital of Huntress itself came under assault from Task Force Serpent. While Osis again solicited aid from the other Clans, the Grand Council decided that the Jaguars should be left to their own devices. An enraged Osis then oversaw the defense of Huntress before the arrival of reinforcements from the Inner Sphere crushed most of the remaining Jaguar forces.
Wounded by a nekakami assassion, Osis departed for Strana Mechty with the surviving Jaguar warriors. There they fought and died during the Great Refusal. Osis himself met Prince Victor Steiner-Davion face-to-face on the battlefield; the two had a brief conversation about the Clan Invasion and the depths the Jaguars had sunk to before Osis attacked Victor and forced the Prince to behead him with a katana. With the death of Lincoln Osis Clan Smoke Jaguar was no more, and history would consider the invasion ended with his demise.
|“||We will crush the Inner Sphere until they are but smoke and dreams.||”|
|“||I am Lincoln Osis. I can trace my bloodline back to Charissa Osis, one of those who left the Inner Sphere with General Kerensky. Her daughter, Terrisa, fought with Nicholas Kerensky and established the Clans.||”|
|Khan of Clan Smoke Jaguar
3048 – 3060
| Succeeded by|
|ilKhan of the Clans
3058 – 3060
| Succeeded by|
- There is a gray area concerning Osis' replacement as Khan following his election to ilKhan. While he was ilKhan, he apparently continued to act as Khan of the Jaguars. While this situation should not have occurred, there is no mention of any individual replacing Osis as Khan. Therefore, it is assumed that he inexplicably retained his position as Khan while also acting as ilKhan. This definitely seems to be the case according to Trial under Fire, the novelization of Mechwarrior 3 (as well as the game itself, which—unlike the story—is apocryphal), where Brendon Corbett is expected to be the next Khan with Osis' death.
- In Era Report: 3062, Osis is described as the first Jaguar Elemental to ever become Khan of that Clan. However, this is almost certainly an error on the author's part, as the Smoke Jaguar Khan at the time of the Londerholm Revolt in 2912 was Ian Moon. The Moon Bloodheritage is an Elemental one, thus there was at least one Elemental Khan of the Smoke Jaguars before Lincoln Osis.
- In the novel Grave Covenant Phelan Kell erroneously states that Osis did not become a true Khan until after Tukayyid, instead claiming that his title was purely honorary before then. This is contradicted by other sources; in particular, Era Report: 3052 clearly establishes that Osis was the senior Jaguar Khan during the Clan Invasion.
Khan Lincoln Osis with Vandervahn Chistu (on right)
- Twilight of the Clans, p. 16
- Prince of Havoc, p.
- Era Report: 3052, pp. 89-90
- Invading Clans, pp. 53-54
- Invading Clans, p. 55
- Clan Troops, p. 26
- Grave Covenant, p. 263
- Tukayyid, pp. 29-38 "Campaign: Clan Smoke Jaguar"
- Tukayyid, p. 34 "Ambush at the Dinju Pass"
- Wolf Clan, p. 47 "Days of Armageddon - Smoke Jaguar"
- Invading Clans, pp. 61-62 "Tukayyid: The Crucible"
- ComStar, p. 70 "Battle of Tukayyid"
- Era Report: 3052, pp. 90-91, "Brandon Howell Profile"
- Era Report: 3052, p. 57
- Era Report: 3052, p. 91
- Invading Clans, p. 6
- Grave Covenant, p. 145 (pdf version)
- Grave Covenant, p. 145-146 (pdf version)
- Grave Covenant, p. 252-258 (pdf version)
- The Clans: Warriors of Kerensky, p. 24
- Era Report: 3062, p. 20
- Prince of Havoc, p. ???
- Era Report: 3062, p. 97
- Era Report: 3062, p. 96
- Invading Clans, p. 51
- Grave Covenant, p. 234 (pdf version)