The Mechapede is a Scrin walker unit from the Third Tiberium War, determined to be an "advanced customizable biotank" according to GDIInOps.
Background
The Mechapede closely resembles a Terran millipede or centipede, though it is exponentially larger. Its speed is faster than even a Seeker, and can fire in any direction. However, it can not move in reverse.
Abilities
Spawn Shard Segment
Creates a Shard segment on the Mechapede that fires 3 Tiberium shards per salvo. Spawning a segment costs $100 and takes 1 second. Each segment has 1000 health (Ctrl+A).
Spawn Toxin Segment
Creates a Toxin segment on the Mechapede. Spawning a segment costs $100 and takes 1 second. Each segment has 1000 health (Ctrl+S).
Spawn Disintegrator Segment
Creates a Disintegrator segment on the Mechapede. Spawning a segment costs $100 and takes 1 second. Each segment has 1000 health (Ctrl+F).
Spawn Disc Segment
Creates a Disc segment on the Mechapede that fires 5 shots. This is the only segment that can target aircraft. Spawning a segment costs $100 and takes 1 second. Each segment has 1000 health (Ctrl+D).
In-game
The Mechapede's "head" is the only part constructed at first; it has a weapon similar to the ScrinDisintegrators. Eight additional segments, of four varying types, can be added. Shard segments are powerful against enemy infantry (and unintentionally vehicles), disk segments can strike down enemy aircraft, the Tiberium segment has a similar weapon to the Corrupter and does a lot of damage against infantry who are not protected by ZOCOMTiberium field suits, and a Disintegrator segment. These segments allow the Mechapede to be a versatile support unit. Like the Corrupter, its Tiberium toxin can not only heal other Scrin, but also heal itself. Multiple Scrin Mechapedes with four Shock Trooper plasma disk segments and four Disintegrator plasma cutter segments (not counting the head) can destroy a fully armed MARV in a matter of minutes. Although its huge population count, the Mechapede is the strongest non-epic Scrin ground unit in the game, the Reaper Tripod aside.
Destruction of the Mechapede body segments will not destroy the unit, as it can then rebuild more segments. The only way to totally destroy the unit is by targeting the head segment. It is impossible to gain infinite segments on the Mechapede.
Assessment
Pros
Can be equipped with a variety of different segments for different combat situations
Very fast moving
Can provide massive amounts of firepower against single enemy types.
Effective against any enemy, as long as it is equipped with the right segments
Relatively inexpensive
Destroyed segments can be replaced instantaneously during combat in order to extend durability and maintain combat effectiveness.
Cons
Relatively weak; rather low health unless more segments are added
The cost can add up with the initial cost and the segments for up to 2200 before combat.
Loses firepower during combat when segments are destroyed, and requires money to restore
Requires Tier 3
If the head segment is destroyed, all of its other parts are destroyed instantly. Experienced players may use various tactics to headshot mechapedes
Can be killed easily with high firepower and dedicated anti-armor units.
Extremely vulnerable against sonic weapons due to their massive damage and area of effect
Disintegrator segment is generally useless
Bugged in version 1.02, mechapedes cannot rally at rally point properly, and disc segment can not fire if built after shard segment
Is a "jack of all trades, stronger than none" type of unit, since each segment is generally weaker than a unit dedicated to the same field.
Different segments provides different ranges and performances against enemy types, resulting in need for excessive micromanagement to use effectively.
Mechapedes do not follow rally points when set in a Warp Sphere or Warp Chasm. In fact, they do not even leave the portal when they are finished warping in, unlike other Scrin "vehicles". Instead, they instantly appear in front of said production buildings.
In official versions of the game, the Mechapede's sections can change positions while moving.
Its pre-release name was the Millipede, as seen in the Worldbuilder.
Add an image to this gallery
Mechanized walkers 
Scrin Third Tiberium War Arsenal 
