Edited: The basic idea is an oldschool barbarian character that also uses Sabretooth's Cunning, manipulation and combat sense. Sabretooth has an enraged state like many other melee heroes, but his gameplay centers around delaying it for strategy and greater benefits with the "bide" skill. Other features include counter attacking, intimidation (cause flinching) and a percent chance to mark enemies that strike him with a stackable debuff called Grudge.
Some notes on Sabretooth's personality here;
https://forums.marvelheroes.com/discussion/258960/updated-why-do-people-think-its-okay-to-repeat-lies-about-sabretooth-why-he-can-be-playable/p1
[Sabretooth "Barbarian/Reversed Berserker" Build]
Playstyle: Barbarian/Reversed Berserker * Rage auras * Buff/Debuffs
Skill Trees: Savage (offensive attacks) * Survivor (mutant nature) * Cunning (Dirty fighting)
Synergy: Damage to targets afflicted with negative status effects * Brutal damage bonus.
Personality: 90's solo stories. (please, no wolverine name dropping)
Uniques: Windigo pelt * Filthy dog bowl * Weapon x scout visor * Wild child's chain leash * X-factor restraint collar
[The Gimmick]
Frenzied State: Sabretooth's core mechanic is his frenzied state (barbarian rage) fueled by a secondary resource bar. While frenzied, his offensive capabilities are increased and these benefits intensify the longer he remains in this state. This state can be upgraded and customized through three "aura" specializations.
Secondary Resource Bar: This resource bar fills whenever Sabretooth deals damage or is in the immediate area of anyone affected by a bleed effect while he is not in a frenzied state. The frenzied state can be activated at any time but will not deactivate until the resource bar is empty. Sabretooth will enter the frenzied state if the bar is over filled.
[Relevant Powers]
Bide: Sabretooth holds his urges at bay until a more opportune time to cut loose. This ability temporarily increases the maximum capacity of his secondary resource bar allowing his frenzied state to last longer and reach greater duration bonuses.
In The Red Zone: Creed's antics become even more shocking and provocative. Directly enhances Sabretooth's Frenzied state.
Overwhelming Presence: Sabretooth's wanton mayhem terrorizes foes and seduces allies. three specializations that add an aura of inspire fear, inspire weakness or inspire brutality when he is frenzied.
Savage (offensive attacks)
Slash (basic): Medium speed slashing, bleed
Lunge: Jump to attack target, movement bleed
Cull the weak: 360 degree area slash attack. Bonus damage to low health targets.
Brutal Combo: Combo attack. Two punches, a headbutt and ends with a kick, Headbutt has a chance for bleed while the kick has a chance to knock down
Shred: Heavy slashing, bleed
Hammer blow (build up, Intimidate): Chargeable heavy blunt damage, target briefly takes more damage from slash attacks, chance to stun target. Target suffers a chance to flinch (miss attacks) for a short duration afterwards.
Pay back (build up): Chargeable heavy attack, heavy bleed, does more damage the more health Sabretooth has lost, spirit/health back if target dies. Increased defense while charging.
Ravage (charges): Heavy and fast slashing that builds up charges overtime, one slash per charge, Heavy bleed.
Pounce (build up): Charged area attack (like Man-ape's) inflicts vulnerability and heavy bleed
Survivor (mutant nature)
Combat roll: Movement, dodge increase
Alpha predator (passive): Enemies appear on mini map. Defense increase, heal over time, chance to cower nearby hostiles on enemy defeat.
Won't go down easy (passive/active): Active;Brief crowd control immunity. Passive; Provides a damage increase based on the number of enemies attacking you, Sabretooth also gains a chance to counter attack enemies that strike him while in melee range.
Roam: Running, movement power
In The Red Zone: Increases the bonuses while Sabretooth is frenzied. Synergy with "Overwhelming Presence"
Overwhelming Presence (frenzy aura): Three specializations that add an aura of inspire fear, inspire weakness or inspire brutality when he is frenzied. (This specialization also affects the cunning tree power "Send a message")
Threaten (Intimidate): Draw the attention of near by enemies, Chance to cower. Target suffers a chance to flinch (miss attacks) while taunted.
Scent profiler(Signature): Sabretooth uses his natural abilities and decades of experience to identify his prey and deduce their weaknesses. Marks all hostiles within an area of effect. Upgrades all attacks against marked targets to critical hits while preventing critical hits from the targets. Affects all friendly attackers.
Cunning (Dirty fighting)
Bide (passive/active): Active; temporarily increases the maximum capacity of his secondary resource bar. Passive; Increases mental defense, Grudge chance when hit. (Grudge is a stackable debuff that increases the damage enemies receive from Sabretooth while reducing the damage he receives from them).
Deadly ruse: Sabretooth enters his stun animation. He takes no damage from the first attack on him while in this state and immediately retaliates with a heavy strike that causes catastrophic bleeding. This can hit more than one enemy if they are standing near the target and will instantly kill weaker opponents.
Debris Throw (build up, Intimidate): Ranged, chargeable attack, possible to recherche and hit multiple targets. (similar to Luke Cages' chunk o' concrete) Enemies hit by this suffer a chance to flinch (miss attacks) for a short duration afterwards.
Hobbling slash: Low, 180 degree area slash. Inflicts slow, bleeding and prevents critical hits for a short time
Send a message (battle standard): An unnecessarily brutal display to throw the enemy off balance. If this attack dispatches an opponent, a buff/debuff zone is created. It radiates an area of effect that hinders foes, aids allies or even cancels buffs depending on your specialization in "overwhelming presence". Based on your choice in "overwhelming presence" Send a message becomes either "spur allies" "you're next" or "tell your boss".
Coercion: Makes a check against a target's remaining health. If successful the target becomes a summoned ally for a given amount of time or until death. This coerced ally regains all health but takes constant mental damage as well as any damage from combat. Coerced allies can not be taken into other zones and can be sacrificed at anytime to regain spirit.
Ultimate
Extreme measures (Ultimate): Anticipating an unfavorable outcome, Sabretooth detonates incendiary devices he planted in advance (Mary Shelly Overdrive #3)