Neptune

Neptune (ネプチューン) is one of the first four Stardroids Mega Man must fight in Mega Man V for the Game Boy. He's an aquatic Robot Master with a half-human, half-fish appearance. His weapon is Salt Water, a fluid with substances that can corrode metal.

Strategy
Neptune leaps and jumps high into the air, directly to the other side of the field. This can be avoided by simply sliding below him when he leaps, then attacking when he leaps again or jumps. Then, he will attack by throwing a blob of Salt Water that splits into three drops of water that, however, deal the same damage the big blob deals. This is very easily avoided by getting out of the way. When half of Neptune's health has been depleted, he will gain a new attack: jumping several times to cause an earthquake that makes several salty water drops fall from the ceiling. The player has to avoid it by moving out of the drops' way and being careful as Mega Man's mobility decreases when an earthquake occurs. He is always vulnerable to attacks, but the player should make sure to avoid his attacks before shooting. His weakness is the Spark Chaser, which can hit him wherever he is, while having no disadvantages against him. However, it can be only used on him in the rematch against him in Wily's Star. It takes him out in seven hits.

Stage enemies
Enemies in Neptune's stage:
 * Fukuhorn
 * Shuhorn
 * Hyoey
 * Sibul
 * Swim Ball

Damage Data Chart
Amount of damage in units that Neptune receives from each Special Weapon from Mega Man V. {| align="center" border="1px" cellpadding="3" cellspacing="0" style="width: 100%; border-collapse:collapse; line-height: normal; font-size:95%; border: 2px solid #1466B8;"
 * colspan="12" style="text-align: center; background-color: #1466B8;"|

Mega Man V

 * style="text-align: center; background-color: #C6E2FF;"|Mega Buster/Arm
 * style="text-align: center; background-color: #C6E2FF;"|Grab Buster
 * style="text-align: center; background-color: #C6E2FF;"|Bubble Bomb
 * style="text-align: center; background-color: #C6E2FF;"|Photon Missile
 * style="text-align: center; background-color: #C6E2FF;"|Electric Shock
 * style="text-align: center; background-color: #C6E2FF;"|Black Hole
 * style="text-align: center; background-color: #C6E2FF;"|Deep Digger
 * style="text-align: center; background-color: #C6E2FF;"|Break Dash
 * style="text-align: center; background-color: #C6E2FF;"|Salt Water
 * style="text-align: center; background-color: #C6E2FF;"|Spark Chaser
 * style="text-align: center; background-color: #C6E2FF;"|Tango
 * style="text-align: center;"|1:3
 * style="text-align: center;"|0
 * style="text-align: center;"|1
 * style="text-align: center;"|2
 * style="text-align: center;"|1
 * style="text-align: center;"|0
 * style="text-align: center;"| --
 * style="text-align: center;"|1
 * style="text-align: center;"|0
 * style="text-align: center;"|3
 * style="text-align: center;"|1
 * }
 * style="text-align: center;"|1
 * }

Other media
In the manga Rockman Gigamix, the Stardroids are powerful space robots that are attacking Earth, destroying several robots in the process. Neptune defeated Knight Man, but was eventually destroyed in an outer space fight with Shadow Man, who forced him back down to Earth and caused him to burn up reentering the atmosphere.

Trivia

 * Neptune is an aquatic robot named after the planet Neptune, which is named after the Roman god of the sea of the same name.