In the early years of comic strips, racial and national stereotypes were the bread-and-butter of many, many features. The Japanese came in for a comparatively small share of that, and here’s a really obscure example, Hari Kari the Jap.
The strip about a household servant who doubled as a spy for the Japanese government was by H.C. Greening. Greening had just parted ways with his longstanding client, the McClure Syndicate, and spent a short time producing this strip for the Boston Traveler, which syndicated with very little success as the State Publishing Company. Hari Kari the Jap ran there as a weekday strip from November 4 1908 to January 14 1909. Greening kept shopping his wares around New York during this period, and soon found a new receptive client at the New York Herald, after which he dropped the Traveler like a man very relieved.
All samples above are from the collection of Cole Johnson.