Spark

are recurring NaN Enemies in.

Characteristics
NaN Sparks are invincible in some of their appearances, while they can be defeated in others using the Series:. Just as using Series: on NaN Whisps will turn them into NaN Fairies, using the Series: on NaN Sparks will have the same effect.

NaN Sparks in appear in the ALttP:, as well as later NaN Dungeons. They are balls of flashing red or blue flame that cannot be harmed.

NaN Sparks in can be defeated by using the LANS:, which will turn them into NaN Fairies.

NaN Sparks in can be defeated by using the OoS:, which will turn them into NaN Fairies.

NaN Sparks in can be defeated by using the OoA:, which will turn them into NaN Fairies.

NaN Sparks in can be defeated by using the TMC:, which will turn them into NaN Fairies.

NaN Sparks in are invincible, always found in groups called NaN Winders.