Well, late news for these, but for those interested, have you checked out or heard of the new trailers for Heidern for KoF XIV and Ivy and Zasalamel for Soul Calibur VI? Heidern's tall to say the least and people guessed he was going to be one of the upcoming DLC characters because of his distinctive pose and fighting style. That leaves two remaining characters and I think one of them is the fan designed character from the contest held recently.
As for Soul Calibur, apparently Keith Silverstein voiced Zasalamel since SCIII and returned to reprise his role in SCVI. The moment he spoke in his trailer, I was asking myself if I was hearing Saber or that it maybe it was Matthew Mercer, but nope, it's Silverstein and he's using a voice a similar to the voice he used in Dragon's Dogma after I thought about where I heard Silverstein's voice before. And then there's Lani Minella being Ivy's voice actress since SCIII, Grant George being Kilik's since SCIII, and Wendee Lee being Xianghua's since SCII. I do not remember any of these voices, especially Ivy's since I couldn't figure out who voiced her while watching her trailer. The only voices I remember are Nightmare and Siegfried's SCIII voices. Nightmare's SCIII voice was distinctive even for a demonic, distorted voice and Crispin Freeman, who has a very distinctive voice, voiced Siegfried in SCIII. Gameplay-wise, they look interesting and Ivy has a magic bow move? Not much to say since they're short trailers and I didn't play Ivy or Zasalamel much to know what's new or not. Ivy from what I remember reading about her is a very hard character to use and I was drawn more towards Link, Mitsurugi, SCIII Nightmare, Siegfried, and Yun-seong over them when I played SCII to IV.