Steinbeck is a member of The Guild with an ability called The Grapes of Wrath—he can grow grapevines from anywhere on his body and, by grafting them onto other plants, essentially extend his consciousness over all the flora around him. It's a pretty wild power, and fans often compare his whole vibe to Tom Joad from the novel he's named after.
He's clearly inspired by John Steinbeck's writing, especially that classic Depression-era novel. You can see it in his personality: he cares deeply about family and agriculture, has strong feelings about economic inequality, and tends to draw moral lines the way Tom Joad does. He's also into scripture and grapes, which. yeah, checks out given his powers.
What he doesn't handle well is loneliness or poverty—both things that hit different when you're someone shaped by those Steinbeck themes. His dislikes include capitalists, which tells you something about where his head's at politically and philosophically.
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