Various comic stories have included crossover events between the various titles published. In most cases, the stories are alike crossover episodes, in which a main character from one series features in the other. Sometimes, though, stories are shared between both titles, alike crossover novels, or even exceptionally crossing over to outside the Buffyverse.
Past Lives
A vampire hunter, Alexa Landry, has been spreading the word to demons she fights that Angel sent her. This leaves Angel with a horde of demons tracking him for revenge, while others try to find refuge in Sunnydale. As the Scooby Gang learns this, they join forces with Angel Investigations in Los Angeles. The four-issue story arc alternates between issues from both the Buffy the Vampire Slayer Classic and Angel main series.
City of Despair
Buffy is in Sunnydale, and Angel has recently arrived in Los Angeles, but their astral essences are captured and forced to fight gladiatorial battles in the City of Despair. This is the first issue published with the shared title of the Buffy the Vampire Slayer and Angel comic series.
Note from the Underground
In the four-issue arc from Buffy the Vampire Slayer Classic, Angel and Faith join forces in search of Buffy and the Scoobies in the lost city of Sunnydale.
- Note from the Underground, Part One
- Note from the Underground, Part Two
- Note from the Underground, Part Three
- Note from the Underground, Part Four
Reborn
On a mission to reclaim three objects of power which she hopes will restore her former glory, Illyria must also dispatch another "fallen" godling, namely Liandra, protector of Bete Noire. The miniseries Fallen Angel: Reborn is the only instance in which a Buffyverse character features in a publication from another universe.
Time of Your Life
In Buffy the Vampire Slayer Season Eight, Buffy time travels into the 23rd century, when she meets the character Melaka Fray and the universe of Haddyn from the Fray series.
- Time of Your Life, Part One
- Time of Your Life, Part Two
- Time of Your Life, Part Three
- Time of Your Life, Part Four
Stranger Things
Willow features on the second half of the Spike series, magically assisting the vampire and his Team Spike in Las Vegas.
Family Reunion
After leaving Buffy and San Francisco in Slayer, Interrupted, Willow features in the Angel & Faith series. She then stays behind in their dimensional travels to continue searching for magic in the miniseries Willow: Wonderland.
- Women of a Certain Age
- Family Reunion, Part Two
- Family Reunion, Part Three
- Family Reunion, Part Four
Spike and Faith
Spike leaves Buffy and San Francisco in Apart (of Me), Part Three to live his own adventure in Spike: A Dark Place. In the miniseries, he deals with Angel & Faith's Big Bads Pearl and Nash, and eventually receives a phone call from Angel, also seen from London's side, where Spike arrives in the same night. He helps Angel and Faith against Eyghon and deals with Angel's catatonic state. Faith then receives a call from Willow about Dawn fading away, so Spike returns to San Francisco in The Core, Part One, where he stays with the Scooby Gang until the very end of the series.
- A Dark Place, Part Five
- Death and Consequences, Part Three
- Death and Consequences, Part Four
- Spike and Faith
- What You Want, Not What You Need, Part One
Old Demons
The story arc of Archaeus involves both the Buffy the Vampire Slayer and Angel & Faith Season Ten series, and it includes an appearance from Angel in Buffy.
- Old Habits
- Relationship Status: Complicated, Part Two
- Fight or Flight
- Old Demons, Part One
- Those Who Can't Teach, Teach Gym, Part One
- Old Demons, Part Two
- Old Demons, Part Three
- A Tale of Two Families, Part One
The Reckoning
The Buffyverse series finale Buffy Season Twelve also features Angel, Fred, and Illyria from Angel, and Melaka, Erin, and Gates from Fray. They all team up with the Scooby Gang to deal with the Reckoning against Big Bads Harth Fray and Wolfram & Hart.
Welcome Back to the Hellmouth
A scene is shared between the revamp series Buffy the Vampire Slayer issue #4 and Angel issue #0. While Drusilla approaches Xander to bite him, Angel watches the incident from afar. A short story, which shares both titles, has Angel and Buffy visiting Anyanka's magic shop within minutes, looking for the same artifact.
Hellmouth
Hellmouth is the first crossover miniseries of the Buffyverse. It shares both Buffy the Vampire Slayer and Angel 2019 titles and features the title characters meeting each other for the first time in this revamped universe. The crossover event involves both main series as well.