Yellow

Yellow is a well-meaning cowboy figure with a stereotypical fixation on justice, likely influenced by his Undertale SOUL counterpart, which represented justice. However, he is also depicted as highly gullible and foolish, and perhaps too trusting of others; a major example of this is when, after confronting the party for trampling on Blue's flowers (or, should they avoid doing so, intending to seal the Dark Fountain), he briefly believes the party's on-the-spot excuse of the actual culprits being flowers that look like them, before fully falling for Susie's attempt to blame him instead, accepting it as him being so tricky, he "trickified" himself.