Misleader and Maligner

Misleader noun - Someone who leads astray (often deliberately).

Maligner and misleader are semantically related in liar topic. In some cases you can use "Maligner" instead a noun "Misleader", when it comes to topics like person who tells falsehood.

Maligner noun - One who attacks the reputation of another by slander or libel.

Misleader and maligner are semantically related in liar topic. You can use "Misleader" instead a noun "Maligner", if it concerns topics such as person who tells falsehood.