Karko

Karko (An alien thief from the 26th Century who knew, as did just about everybody in his native culture, the secret identities of Batman and Robin (Bruce and Dick), according to a story published in "Detective Comics #257")

Lorendiac’s Lists: Who Knew Bruce Was Batman, Pre-Crisis? (2nd Draft) | Comics Should Be Good! @ Comic Book Resources 2008

Beyond Karko to the north a stretch of water, the Gyanema

An Explorer's Adventures in Tibet Arnold Henry Savage Landor 1894

With my telescope I could see at the foot of a small hill the camping-ground of Karko.

An Explorer's Adventures in Tibet Arnold Henry Savage Landor 1894

Beyond Karko to the North, a stretch of water, the Gyanema Lake, showed brilliantly, and beyond it some comparatively low hill ranges.

In the Forbidden Land Arnold Henry Savage Landor 1894

About four o'clock in the afternoon Bartlett, with Ooqueah and Karko, two sledges, and eighteen dogs, got away for the advance.

The North Pole Its Discovery in 1909 under the auspices of the Peary Arctic Club 1888

Seegloo, and Karko, with four sledges and dog teams carrying nearly the standard loads.

The North Pole Its Discovery in 1909 under the auspices of the Peary Arctic Club 1888

Karko, that they were to go back with the captain the next day; so they could get their clothes as dry as possible, as they probably would not have time to dry them on the forced march home.

The North Pole Its Discovery in 1909 under the auspices of the Peary Arctic Club 1888