A supplanter (noun) supplants (verb). In other words, he or she--through intrigue, underhanded tactics, force, scheming, or strategy takes the place of another. See https://www.thefreedictionary.com/supplant).
Jacob, one of the patriarchs of old, was the fraternal twin of his slightly older brother Esau. Though Esau, as the older, was entitled to the firstborn's portion of his father's inheritance, Jacob, through trickery and lying, received his father Isaac's blessing (see Genesis Chapter 27).
Clearly, Jacob more than lived up to his name when he supplanted his older brother. The supplanting began at birth (see Genesis 25:26) and continued throughout his--and his brother Esau's--life.
The Lord said to . . . [Rachel, when she was pregnant with Jacob and
“Two nations are in your womb,
and two peoples from within you will be separated; one people will be stronger than the other,
and the older will serve the younger.”
When the time came for her to give birth, there were twin boys in her
womb. The first to come out was red, and his whole body was like a
hairy garment; so they named him Esau. After this, his brother came
out, with his hand grasping Esau’s heel; so he was named Jacob.