Complex sentence: In both incarnations of the character, Dogmeat has became widely regarded as one the best received and best remembered features from the "Fallout" series, as well as one of the most popular sidekick characters in video gaming overall.
Split into simpler sentences: In both incarnations of the character, Dogmeat is widely regarded as one the best received and best remembered features from the "Fallout" series. He is also one of the most popular sidekick characters in video gaming overall.