The Other is exactly like you. In both a cosmic sense and a physical one, every single member of the Other — a carbon-based lifeform, a fleshy sack of muscles, bones, and tendons wrapped up in skin, combined with hopes, dreams, and perhaps a soul — has more in common with you than you can possibly imagine.
The Other has reasons for the way they think. The Other can’t control the social, environmental, or genetic features that have determined their birth, beliefs, and appearance. To write off the Other is to believe that your narrow view of the world, so much of which has been determined by your surroundings and personal history, is the only view that matters. It’s hard to get more solipsistic than that.
There is no Other. The Other is you.