Three short verses describe the Prophet Muhammad: sent as a mercy to all the worlds, an excellent example to follow, and a man of great character. When his wife Aishah was asked about his character, she answered that it was the Qur'an.
Al-Anbiya 21:107
Listen on Quran.comوَمَآ أَرْسَلْنَـٰكَ إِلَّا رَحْمَةً لِّلْعَـٰلَمِينَ
21:107And We have not sent you but as mercy for all the worlds.
Al-Ahzab 33:21
Listen on Quran.comلَّقَدْ كَانَ لَكُمْ فِى رَسُولِ ٱللَّهِ أُسْوَةٌ حَسَنَةٌ لِّمَن كَانَ يَرْجُوا۟ ٱللَّهَ وَٱلْيَوْمَ ٱلْـَٔاخِرَ وَذَكَرَ ٱللَّهَ كَثِيرًا
33:21There is indeed a good model for you in the Messenger of Allah - for the one who has hope in Allah and the Last Day, and remembers Allah profusely.
Al-Qalam 68:4
Listen on Quran.comوَإِنَّكَ لَعَلَىٰ خُلُقٍ عَظِيمٍ
68:4And you are surely on an excellent standard of character.
English translation: Mufti Muhammad Taqi Usmani, The Meanings of the Noble Qur'an, via Quran.com. Arabic: Uthmani script.
Who is the best example of good character you have met?