All answers in alphabetical order!
Note: Some of these may be outdated, if you have any updates, tell _5858!

Aisha Jetsam when: 44BN where: The Pumpkin Patch
Aisha Sloth when: 38 BN where: unknown
Angharad Jetsam when: 34BN, where: unknown
Angharad Kacheek when: 40 BN, where: unknown

Baron Von Borovan when: 40 BN where: Mystery Island
Blumy Browslovski when: 32 BN where: unknown
Blumy Skeith when: 46 BN where: Skull Rock
Boris Flotsam when: 36 BN where: unknown
Boris Jetsam when: 33 BN where: unknown
Boris Skieth when: 35 BN where: Maraqua
Boris Sloth when: 40 BN where: The Marketplace
Boris von Cybun when: 30 BN where where: Umbuku Island
Bruce Kacheek when: 50BN where: unknown
Bruce Nimmo when: 39 BN where: unknown
Bruce Techo Died: 28 BN Place: Virtopia

Chani Chiapot when: 35 BN where: Umbuku Island
Chani Techo when: 31BN where: unknown
Chris Flotsam when: 36 BN where: The Haunted Woods
Chris Van Tramp when: 32BN where: Lightning Swamp
Chester Brooglemeister when: 41 BN where: Maraqua
Chester Browslovski when: 29 BN where: Virtopia
Chester Chiapot when: unknown where: unknown
Chester Flotsam when: 39 BN where: Maraqua
Chester Kacheek when: 51 BN where: Faerie Woods

Derek Chia when: 31 BN where: Upper Neopia
Derek Kacheek when: 37 BN where: unknown
Derek Nimmo when: 38 BN where: Mystery Island
Derek Von Borovan when: unknown where: unknown
Derek Von Currywurst when: unknown where: unknown
Donna Flotsam when: 29 BN where: unknown
Donna Jetsam when: 32 BN where: Pumpkin Patch
Donna Van Borovan when: 31 BN where: unknown
Donna von Borakan when: 31 BN where: unknown
Donna Von Gegenuber when: 34 BN where: The Haunted Woods

Englebert Chia when: 18 BN where: Faerie Woods
Ethel Chia when: 39 BN where: The Haunted Woods
Ethel Flotsam when:36 BN where: The Great Cliffs
Ethel Skeith when: 31 BN where: Faerie Woods

Frank Chia when: 25 BN where: Mystery Island
Frank Jetsam when: 39 BN where: Upper Neopia
Frank Von Currywurst when: 39 BN where: The Great Cliffs
Frank Wilberforce when: 45 BN where: Skull Rock

Helen Brooglemeister when: 18 BN where: Maraqua
Helen Chia when: 51 BN where: unknown
Helen Flotsam when: 39 BN where: unknown
Helen Jetsam when: 41 BN where: The Haunted Woods
Helen Kiko when: 39 BN where: unknown
Helen Nimmo when: 39BN where: Maraqua
Helen Skeith when: 35 BN where: Maraqua
Helen Van Tramp when: 39 BN where: Maraqua
Helen Vaughan when: 26 BN where: unknown
Helen Von Borovan when: unknown where: unknown

James Chia when: unknown where: unknown
James von Cybun when: 39BN where: Virtopia
James von Tramp when: 35BN where: unknown

Kevin Browslovak when: 25 BN where: The Haunted Woods
Kevin Sloth when: 34 BN where: unknown
Kevin Techo when: 70 BN where: In the Graveyard
Kevin Wilberforce when: 31 BN where: unknown

Lenny Flotsam when: 34 BN where: Umbuka Island
Lenny Jetsam when: 333 BN where: unknown
Lenny Vaughan when: 33 BN where: unknow
Lenny Von Borovan when: 26 BN where: unknown
Lenny Von Cybun when: 16 BN where: unknown
Lenny Wilber Force: when: 31 BN where: Mystery Island
Lupe Chia when: 21 BN where: unknown
Lupe Chiapot when: 33 BN where: The Haunted Woods
Lupe Kacheek when: 36 BN where: Mystery Island
Lupe von Cybun when: 34 BN where: unknown

Maxwell Brooglemeister when: 35 BN where: unknown
Maxwell Napolean Chia when: 35 BN where: Umbuka Island
Maxwell von Gegenuber when: 31 BN where: Umbuku Island
Michael Brooglemeister when: 34 BN where: Faerie Woods
Michael Kacheek when: unknown where: unknown
Michael von Currywurst when: 35 BN where: The Marketplace
Michael von Tramp when: 33BN where: Skull Rock

Napolean Flotsam when: 43 BN where: unknown
Napoleon Chia when: 35bn where" Umbuka Island
Napolean Wiblerforce when: 26 BN where: Anonalgoin
Napolean Vaughan when: 31 BN where: The Haunted Woods

Oscar Brooglemeister when: 50 BN where: unknown
Oscar Jetsam when: 43 BN where: Upper Neopia
Oscar Sloth when: unknown where: unknown

Rubert Browslovski when: 32 BN where: unknown
Rupert de Kiko when: 35 BN where: Faerie Woods
Rupert Jetsam when: 31 BN where: unknown
Rubert Nimmo when: 21 BN where: The Great Cliffs
Rupert Skieth when: 51 BN where: The Haunted Woods
Rupert Techo when: Died 41 BN where: unknown
Rubert von Tramp when: 33 BN where: unknown
Rupert von Currywurst when: 43 BN where: unknown
Rupert von Currywurst when: 27 BN where: The Great Cliffs

Shawn Brooglemeister when: 37BN where: Upper Neopia
Shawn Browslovski when: 22 BN where: The marketplace
Shawn Browslovski when: 28 BN where: Maraqua
Shawn Chia when: 34 BN where: unknown
Shawn de Kiko when: 30 BN where: The Pumpkin Patch
Shawn von Tramp when: 37BN where: The Haunted Woods
Shoy Chia when: unknown where: unknown
Shoy de Kiko when: 39 BN where: Umbuku Island
Shoy Sloth when: 42 BN where: unknown
Sian Chia when: 26 BN where: The Lightning Swamp
Sian Kacheek when: 30 BN where: unknown
Sian Nimmo when: 31 BN where: the Marketplace
Sophie Brooglemeister when: 30 BN where: Maraqua
Sophie Browslovski when: 34 BN where: Umbuku Island
Sophie Chiapot when: 39 BN where: Umbuku Island
Sophie Flotsam when: 35 BN where: Neopia City
Sophie Jetsam when: 37 BN where: Skull Rock
Sophie Jetsam when: 19 BN where: Maraqua
Sophie Sloth when: 33 BN where: Faerie Woods

Ursula Chiapot when: 26 BN where: The Lightning Swamp
Usula Jetsam when: 18 BN Where: The Haunted Woods
Usula Wilberforce when: 28 BN where: The Haunted Woods.

Valdimir Chiapot when: 39 BN where: unknown
Vladimir de Kiko when: 37 BN where: unknown
Valdimir Nimmo when: 21 BN where: Faerie Woods
Vladimir Skeith when: 42 BN where: The Great Cliffs