Sharp MZ というシャープが販売していたコンピュータの欧州版の“文字”（？）セットに含まれていたものの1つらしいです。
https://www.unicode.org/L2/L2021/21235-terminals-supplement.pdf

> 7. Characters not proposed. Not all characters identified in the target platforms were deemed suitable for encoding. For example, the European character set for Sharp MZ machines included four characters with an obvious resemblance to the ghosts from Pac-Man. These symbols were
determined to be IP-encumbered and thus are not proposed here.

うん……うん……。

マッピングできる文字がないと compatible じゃなくなると思いますケド……いや、まあ……うん……。