Bull-O

Instinctive Rush (Special). As part of the bonus action you take to enter a rage, you can move up to half your speed.

Reckless Attack.  When you make your first attack on your turn, you can decide to attack recklessly, giving you advantage on melee weapon attack rolls using STR during this turn, but attack rolls against you have advantage until your next turn.

Danger Sense.  You have advantage on DEX saving throws against effects that you can see while not blinded, deafened, or incapacitated

Extra Attack. You can attack twice, instead of once, whenever you take the Attack action on your turn

Brutal Critical. You can roll two additional weapon damage dice when determining the extra damage for a critical hit with a melee attack.

Relentless Rage. If you drop to 0 hit points while you're raging and don't die, you can make a DC 10 CON saving throw. If you succeed, you can drop to 1 hit point instead.

Mindless Rage. You can't be charmed or frightened while raging.

Unarmored Defense. While not wearing armor, your AC equals 10 + DEX modifier + CON modifier + any shield bonus.

Bull-o can make 3 attacks per action (2 Great sword, 1 punch attack; while not raging)

Great sword. Melee Weapon Attack: +9 to hit, reach 10 ft., Hit: 17 (3d6 + 5) Slashing damage

Punch  Melee Weapon Attack: +9 to hit, range 5 ft., Hit: 10 (1d8 + 5) Bludgeoning damage.

Frenzy Attack. While in a frenzy, you can make a single melee weapon attack as a bonus action on each of your turns after this one.

Rage. (3) As a bonus action enter a rage for up to 1 minute (10 rounds).  YOU gain advantage on STR checks and saving throws (not attacks).  +3 melee damage with STR weapons, resistance to bludgeoning, piercing, slashing damage.  You can't cast or concentrate on spells while raging.  Your rage ends early if you are knocked unconscious or if your turn ends and you haven't attattacked a hostile creature since or last turn or taken damage since then.  You can also end your rage as a bonus action.  

Retaliation. When you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee weapon attack against that creature.

Stone's Endurance. As a reaction, reduce damage dealt to you by 1D12 +4 once per short rest.