HL, pronounced 'Hell' is the currency of Disgaea.
HL is earned by defeating monsters, and can also be given as a reward on the bonus gauge in battle. On one occasion, you are given 300 HL by a vassal, while, in Chapter 3, an additional 5000 HL is coerced from Hoggmeiser. You can also gain additional HL through the Dark Assembly, by passing the bill "Raise Military Funds".
The amount of HL earned can be increased through the use of Brokers, up to an additional 300%.