Virtues of the Ahlul Bayt
The following narration is recorded in Musannaf ibn Abi Shaybah:
لا يحبنا منافق ولا يبغضنا مؤمن
(With regards to the Ahlul Bayt [RA], it was said) A hypocrite will never love us and a believer will never hate us. [Musannaf ibn Abi Shaybah, Hadith: 32779]

A similar narration is found in Sahih Bukhari and Sahih Muslim:
لا يحبهم إلا مؤمن ولا يبغضهم إلا منافق
Only a believer loves them and only a hypocrite hates them.
Having gained an understanding on who the Ahlul Bayt are, we will now commence with discussions on some of the famous personalities of the Ahlul Bayt
Famous personalities from the Ahlul Bayt: Fatimah رضي ألله عنها

Birth
There is a difference of opinion among the historians regarding the year of birth of Sayyidah Fatimah RA bint Rasulillah ﷺ. Some write that Sayyidah Fatimah radiyallahu ‘anha was born during the period the Quraysh of Makkah were rebuilding the Ka’bah which happened approximately 5 years prior to the nubuwwah of Rasulullah ﷺ. At that time, the age of Rasulullah ﷺ was 35. [Tabaqat Ibn Sa’d vol. 8 pg. 11] According to other scholars, her birth was not very long after nubuwwah when the age of Rasulullah ﷺ was 41. There are other views as well. [Al Isabah fi Tamiz al Sahabah vol. 4 pg. 365]

Her Name and Titles
According to the preferred view, Sayyidah Fatimah radiyallahu ‘anha is the youngest daughter of Rasulullah ﷺ. Her name is Fatimah and her famous titles are Zahra’ and Batul. All the four daughters of Nabi ﷺ viz. Zainab, Ruqayyah, Umm Kulthum and Fatimah radiyallahu ‘anhunna are the children of Sayyidah Khadijah radiyallahu ‘anha and are biological sisters who were brought up in the blessed environment of the house of Rasulullah ﷺ. They reached maturity in the care of their mother and benefitted from the lofty personalities of their parents.

Character and Personality
The Muhaddithin document the style and manner of Sayyidah Fatimah radiyallahu ‘anha in the hadith books as:
فاقبلت فاطمة تمشى ما تخطئ مشية رسول الله صلى الله عليه و سلم شيئا
When Sayyidah Fatimah radiyallahu ‘anha used to walk, her walk resembled the walk of Rasulullah ﷺ. [Muslim vol. 2 pg. 290]
The same subject has been documented in Tirmidhi from Sayyidah Aisha radiyallahu ‘anha in the following words:

عن عائشة قالت ما رايت احدا اشبه سمتا و لا هديا برسول الله صلى الله عليه و سلم
I have not seen anyone who resembles Rasulullah ﷺ in his personality and character more than Fatimah.
An Incident in childhood showing her love for her father ﷺ
The enmity of Quraysh towards Islam was from the very beginning who anticipated an opportunity to disgrace and humiliate the Muslims.

Sayyidina Ibn Mas’ud radiyallahu ‘anhu narrates: “Once Rasulullah ﷺ was performing salaah in the haram near the Ka’bah. Some evil Quraysh made an evil plot. They took the intestines of a camel and put it on the back of Rasulullah ﷺ while he was in sajdah. The Quraysh began laughing among themselves over this evil act.

و عن عبد الله بن مسعود قال … فانطلق منطلق الى فاطمة و هى جويرية فاقبلت تسعى و ثبت النبى صلى الله عليه و سلم ساجدا حتى القته عنه و اقبلت عليهم تسبهم فلما قضى رسول الله صلى الله عليه و سلم الصلوة قال اللهم عليك بقريش اللهم عليك بقريش
Someone went to Fatimah to inform her. She was a small girl. She came running while Rasulullah ﷺ remained prostrate. She threw the intestines off him and began cursing the Quraysh. When Rasulullah ﷺ completed his salaah, he cursed: ‘O Allah, deal with the Quraysh! O Allah, deal with the Quraysh!’[Bukhari vol. 1 pg. 74]