\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[
style=authoryear-icomp,
maxnames=2,
backend=biber,
safeinputenc,
]{biblatex}
\DefineBibliographyStrings{ngerman}{%
urlseen={Abruf v.}%
}
\DeclareNameFormat{author}{%
\usebibmacro{name:last-first}{#1}{#3}{#5}{#7}%
\usebibmacro{name:andothers}%
}
%\DeclareNameAlias{labelname}{author}
\renewcommand*{\multinamedelim}{{{\color{red!80!black}/}}}
\DefineBibliographyStrings{ngerman}{and={/}}
\renewcommand*{\finalnamedelim}{%
\ifnumgreater{\value{liststop}}{2}{\finalandcomma}{}%
\bibstring{and}}
\DeclareFieldFormat{pages}{#1}
\DeclareFieldFormat[incollection]{title}{#1}
\DeclareFieldFormat[book]{title}{#1}
\DeclareFieldFormat[book]{subtitle}{#1}
\DeclareFieldFormat[incollection]{booktitle}{#1}
\DeclareFieldFormat[article]{title}{#1}
\DeclareFieldFormat[article]{journaltitle}{#1}
\DeclareFieldFormat[online]{title}{#1}
\renewbibmacro*{publisher+location+date}{%
\printlist{location}%
\iflistundef{publisher}
{\setunit*{\addcomma\space}}
{\setunit*{\addcolon\space}}%
% \printlist{publisher}%
\setunit*{\addcomma\space}%