Aquatic Trooper

Aquatic Trooper Elite

Medium humanoid (human), lawful neutral

Armor Class 17 (aquatic armor)
Hit Points 78 (12d8 + 24)
Speed 30 ft., swim 30 ft.

Attributes
STR 14 (+2)
DEX 16 (+3)
CON 14 (+2)
INT 12 (+1)
WIS 12 (+1)
CHA 11 (+0)

Saving Throws Dex +5, Con +4
Skills Athletics +4, Perception +3, Stealth +5, Survival +3, Intimidation +2
Senses passive Perception 13
Languages Common
Challenge 3 (700 XP)
Proficiency Bonus +2

Traits
Aquatic Training.
The trooper has advantage on ability checks and saving throws made to operate or maintain watercraft and while underwater.

Combat Reflexes.
The trooper has advantage on initiative rolls.

Brave.
The trooper has advantage on saving throws against being frightened.

Actions
Multiattack

The aquatic trooper makes two attacks with its laser rifle or vibro-knife.

Blue-Green Laser Rifle

Ranged Weapon Attack: +5 to hit, range 60/120 ft., one target.
Hit: 10 (1d12 + 3) force damage.

Dart Launcher

Ranged Weapon Attack: +5 to hit, range 30/60 ft., one target.
Hit: 7 (1d8 + 3) piercing damage, and the target must succeed on a DC 13 Constitution saving throw or be poisoned until the end of its next turn.

Vibro-Knife

Melee Weapon Attack: +5 to hit, reach 5 ft., one target.
Hit: 6 (1d6 + 3) slashing damage.

Mini-Torpedo Launcher (Recharge 5–6)

The trooper launches an explosive projectile at a point it can see within 60 feet.
Each creature within a 10-foot radius must make a DC 13 Dexterity saving throw, taking:

• 21 (6d6) thunder damage on a failed save 
• Half as much on a success

Bonus Actions
Tactical Reposition

The trooper moves up to half its speed without provoking opportunity attacks.

Notes 

• Here is our first NPC post, in this case from the Science Fantasy genre, such as Rosefall, Aquatic Troopers Elite are human troops, typically found amongst imperial forces that specialize in underwater combat. Their suits provide a fair amount or protection and are immune to natural hazards such as pressure and natural cold.
• Carries a 'Green Pulse Laser' as green lasers work best in water. Standard and typically red or blue direct laser weapons take a -2 penalty when fired underwater as the habitat deflects the energy in those two spectrums. Troopers also have a tactical blade built into their suit for close combat.
• Rebels countering these troopers typically have suits to match underwater protection, but lack the same targeting optics that provide the elite troopers with a bonus +1 to their attack.