William "Will" Grover is the son of former HPD member/current Hawaii Five-0 member Lou Grover and his wife Renee Grover. He is the younger brother of Samantha Grover.
Season 6[]
A case from 25 years ago forces Grover to take his family on the run when a dangerous mob boss tracks him down to seek revenge.
Season 7[]
In 7.08, 'Hana Komo Pae' ('Right of Passage'), Grace goes to a winter formal that is being chaperoned by Danny. It is revealed by Will Grover that he is her boyfriend. When Danny takes Will into the bathroom to talk to him about Grace, a splinter group of Al-Qaeda terrorists takes the dancers hostage. They are looking for a specific kid named Jeremy. It is up to Danny and Will to get a message to the outside to save everyone inside and also to protect Grace. The plan goes awry when the hostage-takers discover that Danny is missing and threaten to kill Grace if he does not come to the room and deliver Jeremy. When he does, they are all taken hostage and now it is up to Will and Five-0 to save everyone. One hostage-taker talks to Steve and tells him that if they do not get Jeremy's father on the phone to give them what they want, Danny and Grace will be the first ones to die. One of the people who is keeping them hostage has Danny call Steve. Danny keeps referring to Will when he is on the phone with Steve and Will is Lou's son but Steve and Kono don't get it. Then Lou comes over and realizes that Danny means his son Will is in a safe place and he is supposed to call him. Lou calls Will and asks if he is alright and then Will says that he can get a better view of the ballroom where the hostages are. Will then goes down and starts a live stream for Chin, Lou, Steve and Kono to see how many enemies are inside the ballroom using his smartphone. They eventually infiltrate the room with the hostages and everyone is saved unharmed. Steve looks first for Grace as he is very concerned about her, as he sees her like a daughter.
Appearances[]
- He is seen at the winter formal where Danny discovers he is Grace's boyfriend.
- He is seen in 7.15 Ka Pa'ani Nui on his phone texting his girlfriend Grace an later eating pancakes Lou Grover made for the two of them.
- In 7.21 Ua malo'o ka wai his father takes Will to Chicago where Lou he testifies against his former friend Clay Maxwell who is believed to have murderd his wife in episode 5.20 Ike Hanau.
Notes[]
- He is in the same grade and the boyfriend as Grace Williams.
| Season Six | ||||||||||||
| Mai ho`oni i ka wai lana mâlie | Lehu a Lehu | Ua 'o'oloku ke anu i na mauna | Ka Papahana Holo Pono | Ka 'alapahi nui | Na Pilikua Nui | Na Kama Hele | Piko Pau 'iole | Hana Keaka | Ka Makau kaa kaua | Kulean | Ua Ola Loko I Ke Aloha | Umia Ka Hanu |
| Hoa 'Inea | Ke Koa Lokomaika'i | Ka Pohaku Kihi Pa'a | Waiwai | Kanaka Hahai | Malama Ka Po'e | Ka Haunaele | Ka Pono Ku'oko'a | I'ike Ke Ao | Pilina Koko | Pa'a Ka 'Ipuka I Ka 'Upena Nananana | O Ke Ali'I Wale No Ka'u Makemake | |
| Season Seven | ||||||||||||
| Makaukau 'ce e Pa'ani | No Ke Ali'i' Wahine A Me Ka Aina | He Moho Hou | Hu a'e ke ahi lanakila a Kamaile | Ke Ku 'Ana | Ka hale ho'okauweli | Ka makuahine a me ke keikikane | Hana Komo Pae | Elua la ma Nowemapa | Ka Luhi | Ka’ili aku | Ka 'Aelike | Ua ho'i ka 'ōpua I Awalua |
| Ka laina ma ke one | Ka Pa'ani Nui | Poniu I Ke Aloha | Hahai i nā pilikua nui | E mālama pono | Puka 'ana | Huikau nā makau a nā lawai'a | Ua malo'o ka wai | Waimaka 'ele'ele | Wehe 'ana | He ke’u na ka ‘alae a Hina | Ua mau ke ea o ka 'aina i ka pono | |
| Season Eight | ||||||||||||
| Fire Will Never Say that It Has Had Enough | Dog Days | Your Knife, My Back. My Gun, Your Head | No Matter How Much One Covers a Steaming Imu, The Smoke Will Rise | At Kama'oma'o, The Land of Activities | Unfolded by the Water are the Faces of the Flowers | The Royal Eyes Rest Above | The Trail Leads To A Diving Place; Do Not Follow After | Death at Sea | The Future is in the Past | A Tall Tree Stands Above the Others | The Round Up | What is Gone is Gone |
| The Children of Kalaihaohia | A Coral Reef Strengthens Out into Land | Only the Stars of Heaven Know Where Pae Is | The Fire Blazed Up, Then Only Ashes Were Left | To Do One's Duty | No One Has Ever Died For the Mistakes He Has Made; Only Because He Didn't Repent | Kind Is the Bird of Kaiona | The Answer to the Riddle is Seen | Though the Fish is Well Salted, the Maggots Crawl | What Parents Will Do, Children Will Do | The Tough Branch That Does Not Break in the Kona Gale | Ancients Exposed | |
| Season Nine | ||||||||||||
| Cocoon | The Man Who Fell from the Sky | When the Sea Draws Out the Tidal Wave, the Rocks Where the Cowries Hide Are Exposed | On the Slope of the Cliff, Not One Jutting Rock is Hidden from Sight | Nothing More the Eyes to Search For | Is Borne on the Back; Is Borne in the Arms | The Smoke Seen in the Dream Now Rises | Birds of a Feather... | Truth Comes from the Night | When the Light Goes Out, the House Is Dark | Gone on the Road from which There Is No Returning | A Bruise Inflicted on an Innocent Person Vanishes Quickly | Those Above are Descending |
| Depressed with the Heat of Kealwalua | Made Prisoner by the Reign of the Rain | When Covetousness is Conceived, Sin is Born | Offer Young Yaro Leaves to | He Who Eats 'Ape is Bound to Have His Mouth Itch | The Octopus of the Deep Spews It's Ink | Way of the Gun | Offspring of an Owl | The Teacher, the Pupil - Let it Come Forth | A Stranger Only for a Day | The Hand is at Fault | Endlessly Pours the Rain of Waianae | |