[Tex/LaTex] Typesetting \varepsilon (ε) in normal text

Question

I have a pretty arcane problem, I know, but here we are:
I reference and cite a project called Exodus – companies own spelling: εxodus, i.e.:

ε [GREEK SMALL LETTER EPSILON (\varepsilon)] + "odus"

% !TeX program = lualatex
% !BIB TS-program = biber
% !TeX encoding = UTF-8
% !TeX spellcheck = de_DE
\documentclass[
    fontsize=12pt,
    oneside,
    a4paper,
    titlepage,
    numbers=noenddot,
%   draft,
]{scrbook}
\usepackage[ngerman]{babel}
\usepackage{lmodern} % font <--- may be important
\usepackage{csquotes}

\usepackage[style=numeric,
sortcites=true,
sorting=none,
defernumbers=true,
backref=true,
backend=biber]{biblatex}

\begin{filecontents}{mybib2.bib}
@online{exodusHomepage,
    title = {$\varepsilon$xodus},
    subtitle = {{varepsilon The privacy audit platform for Android applications}},
    titleaddon = {Startseite},
%   date = {2020-08-29},
    urldate = {2020-08-29},
    language = {english},
    url = {https://reports.exodus-privacy.eu.org/en}
}
@online{exodusHomepageLunar,
    title = {$\epsilon$xodus},
    subtitle = {{epsilon The privacy audit platform for Android applications}},
    titleaddon = {Startseite},
%   date = {2020-08-29},
    urldate = {2020-08-29},
    language = {english},
    url = {https://reports.exodus-privacy.eu.org/en}
}
\end{filecontents} 

\addbibresource{mybib2.bib}

\begin{document}
\noindent
Exodus/exodus:\\
% all commented lines cannot compile or so
% companies own spelling: εxodus\cite{exodusHomepage}\\
% companies own spelling: {\epsilon}xodus\cite{exodusHomepageLunar}\\
% companies own spelling: {\varepsilon}xodus\cite{exodusHomepage}\\
companies own spelling: $\epsilon$xodus\cite{exodusHomepageLunar} (wrong lunar letter actually)\\
companies own spelling: $\varepsilon$xodus\cite{exodusHomepage}

\printbibliography
\end{document}

In the text, it looks I'd say okay:

(Though the GREEK LUNATE EPSILON SYMBOL (\varepsilon) looks way better IMHO, but well… it's factually/semantically wrong, so I cannot use that.)

But in the bibliography it looks really off though:

Can we typeset/improve that properly?

Answer 1

Try the textGreek package:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{textgreek}

\begin{document}
\textepsilon
\end{document}