Crisis on Infinite Earths has two more parts to play out in the five-hour Arrowverse crossover that is set to be a major game-changer for The CW moving forward. Based on the iconic DC Comics storyline from 1985, the DC TV shows are taking the crossovers to a whole new level this time.

Along with honoring the shows that currently exist, the crossover is also referencing past series and even some big DC movies. Smallville, Birds of Prey, Batman ’66, Batman ’89, and Superman Returns, DC viewers are getting the smorgasbord of worlds literally crossing over. Within the first three hours of the crossover, there were a ton of cameos and special guest spots that celebrated the DC live-action franchises. With two more episodes coming, there are still several more surprise cameos in store for viewers.

As fans patiently wait for the final two installments, the cameos have been rewatched over and over again. While it remains to be seen what is coming on January 14, it’s time to look at the 10 best DC cameos from the first three parts.

Disclaimer: While there were guest spots of other non-Arrowverse DC characters, this list focuses mostly on the actors who had very short appearances or didn’t play significant roles like Earth-96 Superman, Earth-90 Flash, and Black Lightning.

Please note, spoilers for more than just the cameos will be included.

Alexander Knox (Earth-89)

The Tim Burton-Batman universe got honored big time within the first few minutes of the crossover when fans got to see Earth-89. With Danny Elfman’s iconic Batman score playing in Earth-89 that was surrounded by red skies, a familiar face shows up.

Robert Wuhl is seen reading a newspaper with the headline “Batman Captures Joker” and while they never say his name, Wuhl was almost certainly playing his Alexander Knox character from Batman ’89.

Dick Grayson (Earth-66)

Batman ’66 was one of the first shows to be revealed to be getting a tribute in the crossover. Burt Ward, best known as Dick Grayson/Robin in the Caped Crusader series, got to return to the DC world once more as The CW’s crossover briefly visited Earth-66.

Similar to Wuhl, Ward’s character is never referenced by name; however, given his shirt and classic catchphrase reference, he was 100% playing Dick once again before his Earth was destroyed.

Hank Hall/Hawk (Earth-9)

After months of rumors and speculations, DC Universe’s Titans officially took part in the crossover as their world was labeled as Earth-9.

Alan Ritchson is one of two actors to appear in the cameo-sequence as his character Hank Hall, a.k.a. Hawk, smilingly (weirdly enough) is blasted by anti-matter energy as Earth-9 gets destroyed.

Captain Cold A.I. (Earth-74)

While fans thought they had seen the last of Wentworth Miller in the Arrowverse, that didn’t change, technically. However, when the heroes get a hold of a Waverider from Earth-74, it’s not Gideon that is AI’ing the ship.

Instead, the voice of Leonard Snart is heard, leaving many viewers surprised. While we certainly hope to again see Miller in the flesh as any version of Snart, hearing Captain Cold being the Waverider’s A.I. was hilarious.

Barbara Gordon/Oracle (Earth-203)

Birds of Prey also got to pop-up for an honorary cameo as Earth-203 (a clever nod) was about to be destroyed. Initially believed to be just one guest spot, this cameo became two instead.

During the final moments of Earth-203’s existence, Dina Meyer’s Barbara Gordon, a.k.a. Oracle, is heard for the first time since 2003. While she is never seen, that voice cameo was still a welcomed surprise.

Helena Kyle/Huntress (Earth-203)

Continuing on the Birds of Prey cameos, Ashley Scott also got to join the party as she reprised the role of Helena Kyle, otherwise known as Huntress of Earth-203. While the cameo was short and tragic, as viewers watch her be taken by the anti-matter wave, it was still amazing to see the short-lived series be included.

However, that cameo would have been 100% complete if Batwoman star Rachel Skarsten had been able to show up too and reprise her role as Dinah Lance, reuniting the trio once more.

Jason Todd/Robin (Earth-9)

The other Titans cameo was the surprising appearance of Curran Walter’s Jason Todd, a.k.a. Robin II. Although unlike his fellow Titan, Jason had a more accurate reaction to the wave that destroyed his world.

Even though Earth-9 is gone, the third season of Titans is coming in the fall so don’t expect this Earth to be gone for too long.

Bruce Wayne (Earth-99)

After years of voicing the iconic Caped Crusader, Kevin Conroy finally got to play a live-action Bruce Wayne in one spectacular way. Set on Earth-99 (most likely a nod to Batman Beyond), Kate Kane (Ruby Rose) and Kara Danvers (Melissa Benoist) visit this world in hopes of finding the Paragon of Courage known as the Bat of the Future.

Seeing Conroy getting to play a beaten down Bruce who has gone down an even darker path was enormous. While Bruce does die in the end, it’s still amazing that fans who have followed Conroy’s career as the definitive voice of Batman will also now have the experience of having seen him do it in live-action too.

Lucifer Morningstar (Earth-666)

Despite denying it in interviews, Tom Ellis was indeed in the crossover as Lucifer Morningstar from Lucifer. Seeing the Devil himself getting to interact with John Constantine (Matt Ryan) was something that left viewers wanting more of them together.

While Lucifer does assist in a big way to help them retrieve Oliver’s (Stephen Amell) soul, it would have been epic if he had followed them to Purgatory. Regardless, Lucifer existing in the Arrowverse multiverse is perfection.

Clark Kent & Lois Lane (Earth-167)

While Arrow may have started the Arrowverse in 2012, DC TV wouldn’t be where it is today if it hadn’t been for the success of Smallville. Tom Welling and Erica Durance both got to return to their roles as Clark Kent and Lois Lane respectively during the second hour of the event.

While seeing Clark no longer having his powers was a surprise, knowing that he did it by choice so he could raise a family with Lois was still an incredible Superman move. As a bonus, he also gets to throw a punch as Jon Cryer’s Lex Luthor. Hearing the show’s familiar scores, the Kent Farm and the actors back in their roles was a major reward for fans that followed the 10-year long series. Hadn’t it been for Smallville’s success, there probably wouldn’t have been an Arrowverse by now.