No. Enc.: 2d6 (2d6)
Movement: 120' (40')
—Flight: 120' (40')
—Swim: 120' (40')
Armor Class: See Below
Hit Dice: 2
Attacks: 1 (bite)
Hoard Class: None
Voidswimmers are freakish, 3' long fish that move unimpeded through solid matter, air, and water, with no loss of momentum for shifting mediums. They are almost always "out of phase" with reality, and cannot be struck or damaged by any physical means; only Mental Mutations work against them while desolidified.
The creatures must become corporeal to feed. They make hit-and-run attacks, phasing around—and into—their prey to take quick bites before shifting again. A victim has only a 20% chance each round of being fast enough to physically retaliate a voidswimmer...but this number is upped by 10% for each positive Dexterity-based Missile Attack Modifier possessed by the target. (Conversely, this number is lowered by 5% for each negative Modifier.) And even if victims are fast enough, they still must strike against an effective Armor Class of 3.
Some sages hypothesize that voidswimmers are not of this world, and came to the Mutant Future through Ancient dimensional-travel experimentation.
Mutations: Aberrant Form (Phase-State)