Distortion Drive

A Distortion Drive is a special move that consumes 50% of the Heat Gauge for everyone except Hakumen: Since he uses the Magatama system, he requires 4 Magatama for all his Distortion Drives except Kokuujin Ougi: Mugen(Retribution: Infinity), which requires 8 magatama, but allows him to use it unlimitedly until the DD effect wears off.

Every character has their own Distortion Drives and the way of executing it varies between characters.

Rachel Alucard
Both of Rachel's Distortion Drives can be done in Mid-Air.

Carl Clover
All of Carl's Drive inputs (Nirvana Commands) requires the button to be released, instead of pressed, and can be done in mid-air too. The same applies to Nirvana's Distortion Drives.

Nu-13/Lambda-11
Even Lambda and Nu being not the same person... (I mean... You got my drift...) ...they share the very same Distortion Drives...

Hakumen
Hakumen does not use a Heat Gauge, instead he uses Magatama to do his Distortion Drives, and because of that, his Distortion Drives costs are different. Magatama are the little orbs that float around his Gauge, the Magatama Power Gauge, which shows the energy stored that allows him to replenish a Magatama. Magatamas are charged based on Hakumen's attacks, but will replenish on its own after a little while without being hit.

Tsubaki Yayoi
Tsubaki's Distortions are somewhat complex... Confutatis Maledictus, if done with the C button, won't spend Install Gauge, however if done with D, it'll drain every Install Slot available to power the DD up. Macto Maledictus acts somewhat like Hakumen's Mugen, it leaves her with Infinite Install until her Install Gauge Drains off. However, unlike Hakumen's, she don't need a full gauge to activate, only 50% Heat.

Makoto Nanaya
Makoto's Particle Flare depends on the amount of the Charge Gauge, meaning the button should be held three times and released (preferably) when her Charge Gauge is at it's third level.

Valkenhayn R. Hellsing
Valkenhayn's King Flight has third hit guaranteed if the second one hits. Also, while the third hit strike is being made, Valkenhayn's Wolf Gauge is charged as if he's standing. Also, his Storm Wolf has Reversal Invulnerability.

Platinum the Trinity
Platinum's Miracle Jeanne varies according to next weapon she can summon (not the one she has currently equipped). It basically summons a stronger/enhanced version of that weapon.