# Metroid

Metroids are a group of monsters in dNetHack. They belong to the trapper or lurker above monster class, which has been renamed the trapper, lurker, or metroid class. 
All forms of metroid except the baby metroid have life drain attacks of varying potency, in addition to other physical and elemental (acidic, shocking) attacks. 
Death rays will not kill metroids (except baby metroids). Instead, the energy will stimulate the metroid to bud or divide, creating one or more new metroids or baby metroids, depending on the development stage of the parent metroid.

Contents

1 Baby metroid
2 Metroid
3 Alpha metroid
4 Gamma metroid
5 Zeta metroid
6 Omega metroid
7 Metroid queen
8 Encyclopedia entry

Baby metroid

t baby metroid 

Difficulty

2

Attacks

Bite 1d2 physical

t baby metroid 

Difficulty

2

Attacks

Bite 1d2 physical

Base level

1

Base experience

8

Speed

9

Base AC

7

Base MR

0

Alignment

0 (neutral)

Frequency (by normal means)

0 (Not randomly generated)

Genocidable

No

Weight

72

Nutritional value

20

Size

tiny

Resistances

fire, poison, acid

Resistances conveyed

A baby metroid:

 can fly.

 can survive underwater.
 does not breathe.
 cannot pick up items.
 has no eyes.
 has no hands.
 has no limbs.
 has no head.

 regenerates HP quickly.

 is poisonous to eat.

 does not eat. (*)
 is not a valid polymorphable form.

 is neither male nor female.

 is normally generated peaceful.

 wanders randomly.

 has infravision.
 can be seen through infravision.

 never leaves a corpse.

 cannot be tamed.

Baby metroids are the weakest form of metroid, and are not normally generated.  Metroid eggs hatch into baby metroids.  If a metroid egg hatches in your inventory, the resulting baby metroid will always be tame.
Baby metroids are too young to divide, and will therefore die if zapped with a wand of death.  They also do not have a life-draining bite.

Metroid

t metroid 

Difficulty

7

Attacks

Bite 1d4 life drain, Claw 1d1 sticky

t metroid 

Difficulty

7

Attacks

Bite 1d4 life drain, Claw 1d1 sticky

Base level

5

Base experience

136

Speed

10

Base AC

5

Base MR

0

Alignment

0 (neutral)

Frequency (by normal means)

2 (Quite rare)

Genocidable

No

Weight

145

Nutritional value

40

Size

small

Resistances

fire, poison, acid

Resistances conveyed

A metroid:

 can fly.

 can survive underwater.
 does not breathe.
 cannot pick up items.
 has no eyes.
 has no hands.
 has no limbs.
 has no head.

 has a thick hide.

 regenerates HP quickly.

 is poisonous to eat.

 does not eat. (*)
 is neither male nor female.
 is normally generated hostile.

 can follow you to other levels.
 is nasty.

 has infravision.
 can be seen through infravision.

 never leaves a corpse.

 cannot be tamed.

The most recognizable form of metroid.  Only 21 will appear in the dungeon.
If zapped with a wand of death, a metroid divides to form a second metroid.

Alpha metroid

t alpha metroid 

Difficulty

11

Attacks

Bite 1d8 life drain

t alpha metroid 

Difficulty

11

Attacks

Bite 1d8 life drain

Base level

9

Base experience

290

Speed

11

Base AC

3

Base MR

10

Alignment

0 (neutral)

Frequency (by normal means)

2 (Quite rare)

Genocidable

No

Weight

290

Nutritional value

80

Size

small

Resistances

fire, poison, acid

Resistances conveyed

An alpha metroid:

 can fly.

 can survive underwater.
 does not breathe.
 cannot pick up items.

 has no hands.
 has no limbs.

 has a thick hide.

 is poisonous to eat.

 does not eat. (*)
 is neither male nor female.
 is normally generated hostile.

 can follow you to other levels.
 is nasty.

 has infravision.
 can be seen through infravision.

 never leaves a corpse.

 cannot be tamed.

At most 45 alpha metroids will appear in the dungeon.
If zapped with a wand of death, an alpha metroid will bud off a baby metroid.

Gamma metroid

t gamma metroid 

Difficulty

16

Attacks

Bite 1d12 life drain, Touch 1d6 shock

t gamma metroid 

Difficulty

16

Attacks

Bite 1d12 life drain, Touch 1d6 shock

Base level

13

Base experience

448

Speed

12

Base AC

1

Base MR

20

Alignment

0 (neutral)

Frequency (by normal means)

2 (Quite rare)

Genocidable

No

Weight

1450

Nutritional value

400

Size

medium

Resistances

fire, poison, acid

Resistances conveyed

A gamma metroid:

 can fly.

 can survive underwater.
 does not breathe.
 cannot pick up items.

 has no hands.

 has a thick hide.

 is poisonous to eat.

 does not eat. (*)
 is neither male nor female.
 is normally generated hostile.

 can follow you to other levels.
 is nasty.

 has infravision.
 can be seen through infravision.

 never leaves a corpse.

 cannot be tamed.

At most 48 gamma metroids will appear in the dungeon.
If zapped with a wand of death, a gamma metroid will bud off a baby metroid.

Zeta metroid

t zeta metroid 

Difficulty

23

Attacks

Bite 2d8 life drain, Spit 2d8 acid

t zeta metroid 

Difficulty

23

Attacks

Bite 2d8 life drain, Spit 2d8 acid

Base level

19

Base experience

731

Speed

15

Base AC

−1

Base MR

30

Alignment

0 (neutral)

Frequency (by normal means)

2 (Quite rare)

Genocidable

No

Weight

2900

Nutritional value

800

Size

medium

Resistances

fire, poison, acid

Resistances conveyed

A zeta metroid:

 can fly.

 can phase through walls.

 can survive underwater.
 does not breathe.

 has a thick hide.

 is poisonous to eat.

 does not eat. (*)
 is neither male nor female.
 is normally generated hostile.

 can follow you to other levels.
 is nasty.

 has infravision.
 can be seen through infravision.

 never leaves a corpse.

 cannot be tamed.

Only 9 zeta metroids will appear in the dungeon.
If zapped with a wand of death, a zeta metroid will bud off a metroid.

Omega metroid

t omega metroid 

Difficulty

33

Attacks

Bite 2d10 physical, Claw 2d4 life drain, Claw 2d4 life drain, Breath weapon 4d4 shock

t omega metroid 

Difficulty

33

Attacks

Bite 2d10 physical, Claw 2d4 life drain, Claw 2d4 life drain, Breath weapon 4d4 shock

Base level

27

Base experience

1231

Speed

12

Base AC

−5

Base MR

50

Alignment

0 (neutral)

Frequency (by normal means)

2 (Quite rare)

Genocidable

No

Weight

7250

Nutritional value

2000

Size

large

Resistances

fire, poison, acid

Resistances conveyed

An omega metroid:

 can fly.

 can phase through walls.

 can survive underwater.
 does not breathe.

 has a thick hide.

 is poisonous to eat.

 does not eat. (*)
 is a giant.

 is neither male nor female.
 is normally generated hostile.

 can follow you to other levels.
 is nasty.

 has infravision.
 can be seen through infravision.

 never leaves a corpse.

 cannot be tamed.

At most 21 omega metroids will appear in the dungeon.
If zapped with a wand of death, it will bud off a metroid.

Metroid queen

t metroid queen 

Difficulty

43

Attacks

Bite 2d12 life drain, Bite 2d12 life drain, Engulf 2d12 digestion, Breath weapon 5d4 acid

t metroid queen 

Difficulty

43

Attacks

Bite 2d12 life drain, Bite 2d12 life drain, Engulf 2d12 digestion, Breath weapon 5d4 acid

Base level

35

Base experience

1939

Speed

10

Base AC

−9

Base MR

70

Alignment

12 (lawful)

Frequency (by normal means)

1 (Very rare)

Genocidable

Yes

Weight

14500

Nutritional value

4000

Size

huge

Resistances

fire, poison, acid

Resistances conveyed

A metroid queen:

 can fly.

 can phase through walls.

 can survive underwater.
 does not breathe.

 has no hands.

 has a thick hide.
 can lay eggs.

 is poisonous to eat.

 does not eat. (*)
 is female.

 is normally generated hostile.

 can follow you to other levels.
 is nasty.
 is strong.

 has infravision.
 can be seen through infravision.

 appears only in Gehennom.

 never leaves a corpse.

 cannot be tamed.

Only 3 metroid queens will appear in the dungeon.
Metroid queens wander around their dungeon level, laying eggs at irregular intervals. If zapped with a wand of death, a metroid queen will bud off three metroids.
A tame metroid queen will revert to peaceful at the start of her next turn.

Encyclopedia entry

Metroids appear to be able to sense the life energy of their prey as they have no visible sensory organs.

In their natural life cycle, Metroids gradually metamorphose to take a somewhat reptilian form, growing a hard organic shell, a head, and limbs, eventually shedding their gelatinous membrane completely. The shell removes their weakness to cold temperatures.  The egg-laying Metroid Queen appears to be the only form in which Metroids can normally reproduce, although many Metroid bioforms can divide almost instantaneously when exposed to certain kinds of high-energy radiation.

 