And as the Greek lower case letter
ς (sigma) looks the famous Kryptonian emblem we known as a "
S", so Zod's emblem who resembles a "
Z" could be indeed a
Ezh or an
Dze:
Abkhazian Dze (Ӡ ӡ; italics: Ӡ ӡ

is a letter of the Cyrillic script. It is used in the Abkhazian language where it represents the voiced alveolar affricate /dz/, pronounced like ⟨ds⟩ in "pods".
This letter was also used in one 1937 proposal (not adopted) for the Karelian Cyrillic alphabet.
http://en.wikipedia.org/wiki/Abkhazian_Dze
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Ezh (Ʒ ʒ

, has its small letter used in the International Phonetic Alphabet (IPA), representing the voiced postalveolar fricative consonant.
It is also called the "tailed
z". Example: vision /ˈvɪʒən/. It is pronounced as the "s" in "treasure" or the "si" in the word "precision". (See also the Persian alphabet letter ژ.)
Ezh is used as a letter in some orthographies of Skolt Sami, both by itself, and with a caron (Ǯ ǯ

. These denote partially voiced alveolar and post-alveolar affricates, respectively, broadly represented /
dz/.
It also appears in the orthography of some African languages, for example in the Aja language of Benin and the Daghbani language of Ghana, where the uppercase variant looks like a reflected sigma (
Σ).
Origin
Further information: tailed z
As a phonetic symbol,
ezh originates with Isaac Pitman's alphabet in 1847, as a
z with an added hook.
The symbol is based on medieval cursive forms of Latin
z, evolving into the blackletter
z letter. In Unicode, however, the blackletter z ("tailed
z", German geschwänztes
Z) is considered a glyph variant of
z, and not an
ezh.
In contexts where "tailed
z" is used in contrast to tail-less
z, notably in standard transcription of Middle High German, Unicode
ʒ is sometimes used, strictly speaking incorrectly. Unicode offers ȥ "
z with hook" as a grapheme for Middle High German coronal fricative instead.
http://en.wikipedia.org/wiki/Ezh_(letter)