Rubeus Hagrid

Hagrids main importance in Lilly's life other than being a member of the Order with her was that he collected Harry from the Potter's house the night Lilly and James died and took Harry to Number 4 Privet Drive for Dumbledore. This is were Harry spent the majority of the next 16 years of his life. Hagrid was also a great friend to Harry and would have donee anything for him