ʐ

ʐ U+0290, ʐ LATIN SMALL LETTER Z WITH RETROFLEX HOOK ← ʏ [U+028F] IPA Extensions ʑ → [U+0291]

Character variations

ᶼ U+1DBC, ᶼ MODIFIER LETTER SMALL Z WITH RETROFLEX HOOK ← ᶻ [U+1DBB] Phonetic Extensions Supplement ᶽ → [U+1DBD]

English Wikipedia has an article on:

Voiced retroflex fricative

Wikipedia

• IPA:

  (file)

ʐ

1. (IPA) a voiced retroflex sibilant.
2. (superscript ⟨ᶼ⟩, IPA) [ʐ]-fricated release of a plosive (e.g. [dᶼ] or [ɖᶼ]), sometimes implying an affricate (e.g. ⟨ɖᶼ⟩ for [ɖ͡ʐ]); [ʐ]-coloring; or a weak, fleeting or epenthetic [ʐ].

• ʂ (“voiceless retroflex fricative”)
• (Latin script):  Aa  Bb  Cc  Dd  Ee  Ff  Gg  Hh  Ii  Jj  Kk  Ll  Mm  Nn  Oo  Pp  Qq  Rr  Sſs  Tt  Uu  Vv  Ww  Xx  Yy  Zz
• (Variations of letter Z):  Źź  Ẑẑ  Žž  Żż  Ẓẓ  Ẕẕ  Ƶƶ  Ȥȥ  Ⱬⱬ  ᵶ  ᶎ  ʐ  ʑ  ɀ  ᴢ  Ｚｚ  DZDzdz  DZDzdz  DŽDždž  DŽDždž
• (Letters with retroflex hook):  ᶏ  ᶐ  𝼝  ᶗ  ɖ𐞋  ᶑ𐞍  ꭦ𐞈  𝼙  ᶒ  ᶕ  ᶓ  ᶔ  ᶖ  𝼚  ʅ  ɭᶩ  ꞎ𐞝  𝼅𐞟  ɳᶯ  𝼛  Ɋɋ  Ɽɽ𐞨  ɻʵ  𝼈𐞧  Ʂʂᶳ  ᶘ  Ʈʈ𐞯  𝼉  ꭧ𐞭  𝼜  ᶙ  ʯ  ʐᶼ  ᶚ  𝼊𐞹