Minsc and Boo!

Medium humanoid (human), Neutral Good

Armor Class 13 ({@item studded leather armor|PHB|studded leather})

Hit Points 187 (22d8 + 88)

Speed 30 ft.

STR 20 (+5)

DEX 12 (+1)

CON 18 (+4)

INT 10 (+0)

WIS 10 (+0)

CHA 10 (+0)

Saving Throws STR +9, CON +8

Skills Athletics +9, Perception +4, Survival +8

Senses passive Perception 14

Languages Common, Sylvan

Challenge 10

Boo, The Miniature Giant Space Hamster. Boo is Minsc's animal companion. Boo is a miniature giant space hamster and has the statistics of a rat.

Favored Enemy. Minsc's favored enemy is evil. When he hits an evil creature with a melee attack he deals an additional 7 (2d6) slashing damage.

Reckless. At the start of his turn, Minsc may choose to gain advantage on all melee weapon attack rolls during that turn, but attack rolls against him have advantage until the start of his next turn.

Actions

Multiattack. Minsc makes two Greatsword attacks.

Greatsword. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Bonus Actions

Go for the Eyes, Boo. As a bonus action, Minsc talks to Boo and gains the inspiration to go into a berserker fury, for 1 minute. While in this berserking fury Minsc gains the following:

Minsc has advantage on Strength checks and Strength saving throws.
Minsc gains a +4 bonus to damage rolls when using a melee weapon.
Minsc has resistance to bludgeoning, piercing, and slashing damage.
Minsc can make a single melee weapon attack as a bonus action on each of his turns.
Minsc can't be charmed or frightened. If Minsc is charmed or frightened when he enters his berserking fury, the effect is suspended for the duration of the rage
If Minsc drops to 0 hit points and doesn't die outright, he can make a DC 10 Constitution saving throw. If he succeeds, he drops to 1 hit point instead. Each time he uses this feature after the first, the DC increases by 5. After 24 hours, the DC resets to 10.

Reactions

Run, Boo, Run. If Boo takes damage, Minsc can choose to take the damage instead.

Source

MaBJoV, p. 68