This grid seems full of characters, but surely there's room for more.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
20 21 22
23 24 25
26 27 28 29
30 31 32 33 34
35 36 37 38 39
40 41 42 43 44 45 46 47
48 49 50 51 52 53 54
55 56 57 58 59
60 61 62 63 64 65
66 67 68 69 70 71
72 73 74 75 76 77 78 79 80 81
82 83 84 85 86 87
88 89 90 91
92 93 94 95 96 97
98 99 100 101 102
103 104 105 106 107 108 109 110 111 112
113 114 115 116 117
118 119 120 121
122 123 124
125 126 127

ACROSS

1 One-eyed god
5 Type of test
14 Woman with a death glare
20 Neighborhood northeast of Tribeca
21 Lady Gaga or Lil Nas X, for example
22 Like Schoenberg music
23 Inland sea destroyed by an irrigation project
24 Appropriate for
25 Equilateral shapes
26 Mall ninja's weapon of choice
28 Mayhem
29 Biomechanical organism
30 Project Gemini orbiter
31 Famous Finnish forward
32 The Sun, in Santiago
34 Hideaway
35 Bring on board
37 Variants of a classic board game
39 "You called?"
40 Initialism in cryptography
43 Approximately a kilometer, in old Russia
46 Guitarist's accessory
47 Hamburg's country, to the IOC
48 Didn't follow the intended solve path
50 Name of the man who's the Man With No Name
52 Forerunner of ska
55 Monstrous creature
56 Cone of cold?
58 Tiling or fractal
60 Tagalong alternative
61 Corporate head honcho (abbr.)
62 Scrooge and Mr. Krabs, e.g.
65 Sandwich bread
66 Make believe
69 With decorum
72 Barnyard sound
75 Bins
77 Thing of beauty
78 Exterior
82 Imagine Dragons song
85 Place where a 49-down is born
87 Number of the row that contains both halves of this puzzle's theme
88 Post-roast exclamation
89 Wild card
90 Word with "swing" or "-plate"
92 Minion of Sauron
93 Bust ___ (laugh heartily)
95 They've got good resolutions
97 Half of a mule, genetically
98 Inactive
99 Anime protagonist also known as "Mob"
101 Arbitrator of airport codes (abbr.)
103 Company whose stock made headlines alongside Gamestop
104 Doodad
105 Material folded in ancient Japan
108 Acrimony
113 Old arcade system
115 Premiere location of many famous operas
117 Company that administers reading level tests
118 Lizard with a prominent dewlap
119 Evidence-based medicine
121 Snoop
122 Gawk (at)
123 "Doesn't matter to me"
124 Band named for electric waveforms
125 Sunflowers and daisies
126 Singer/songwriter who acted in "Pitch Perfect"
127 Actress Harper

DOWN

1 Famous Japanese castle
2 Bandana-like headgear
3 "____ Mondays"
4 Director who makes movies on time?
5 Belongings, in Bologna
6 Throw wide, poetically
7 Savior
8 Press shift, in many video games
9 Store worker
10 Like a prayer
11 "Saint" in Greek (fem.)
12 Is a total snack
13 Beowulf's uncle
14 Polo and others
15 Alcohol base
16 Joint
17 Less newfangled
18 Alternatives to foils
19 Bring into agreement
27 "Not really"
31 Harbinger
33 Manufacturer of 113-across
36 "___ been thinking..."
38 Suffering from a common sleep disorder
39 Hurl, slangily
40 Mother of Hera
41 Blemish on Frankenstein's monster
42 Parable
44 Heirs
45 "Waterfalls" group
47 Clock setting in Portugal or Mauritania (abbr.)
48 Company with an eye logo
49 See 85-across
51 Prestigious VFX company
53 Give it a shot
54 Last word of a countdown
57 They can sound like kays or esses
58 Like some eras of palaeontological study
59 Official language of Gallaudet, for short
63 Hero of the Völsunga saga
64 Stunter Knievel
67 Summer, in Strasbourg
68 Signify
70 Misplace
71 Desert plant
72 Popular TCG
73 "What have we here?"
74 Where many people settle?
76 What to exchange for Stockholm stock (abbr.)
79 Babes
80 Falls victim to one of the classic blunders, maybe
81 Defunct car company
83 Opposite of buff
84 Run-___
86 Hebrew:bet::Arabic:___
89 They're absolute clowns
91 WWII landing craft
93 Yellowfin tuna
94 One of a pair of juxtaposed Hogarth paintings
96 Something that many fathers teach their children how to do
98 High-end watches
99 Sandbars
100 Device to measure electric waveforms, familiarly
102 ____ Maria
103 Word borrowed from the Latin for "soul"
104 Common Spanish infinitive
106 Large South American herbivore
107 Large African herbivore
109 Immigrant
110 Dorothy, to Em
111 Some 95-acrosses
112 Guns for hire, shortly
114 Donated
116 Groove
117 Actress Redgrave
120 Frequently vilified neighborhood org.