Few Dungeons & Dragons classes are as popular and notorious as the Warlock. In Fifth Edition they have a penchant for bridging the gap between squishy spell casters like Wizards and melee heavy-hitters like Barbarians. This is reflected in the Pact of the Chain boon, which Warlocks can select at level three.
Source:https://www.cbr.com/dnd-5e-warlock-familiars-ranked/