Lock is a status which completely prevents a dice from being used. This effect applies to the first N dice used, where N is the number of dice locked. The effect wears off after the locked user's turn ends.

Certain effects, like Counter, will lock only dice that roll a specific value.

In the Parallel Universe episodes, Lock is changed to Lock?. This status prevents the use of all dice until you've used your first N dice in order, where N is the number of counts of Lock? inflicted. This requires the Lock?ed user's equipment to be used in a different order, but it can cause issues if the Locked? fighter has a loadout that can't work with a specific dice, like if a Snowman gets locked and rolls an even dice first.

There are two enemies immune to lock:

• Scathach
• Pumpkin Spice (Halloween Special)

These pieces of equipment inflict Lock:

• Bear Trap
• Beetle Headbutt
• Fishing Net
• Four Handed Sword+
• Glare
• Glue
• Hurricane
• Seize
• The Wind
• Two Handed Sword+

These pieces of equipment have a chance to inflict Lock:

• Dark Shadow
• Determination
• Short Circuit
• Starspear

The Halloween Special-exclusive gadget Bullseye also inflicts Lock.

The Reunion adds more equipment that can inflict Lock:

• Beetle Bash
• Rockpick
• Wind Crystal

These extra pieces of Reunion equipment also have a chance to inflict Lock:

• Dire Wolf Bite
• Hollywood Accounting-
• Live Wire
• Shifting Storm (except in the Jester episode)
• Star Crystal
• Starpick
• The Sorrows
• Wolf Puppy Howl